Description: Thank you for considering my 2E1 TWO EARS IN ONE® True Stereo Music and Gaming Headphones/Headsets For The Single-Sided Deaf With Separate Left and Right Stereo Channels To One Ear!™ With my 2E1 Two Ears in One stereo headphones, if you recently lost hearing in one ear you can hear audio in true stereo via a headphone again! With my 2E1 Two Ears in One stereo headphones, if you have always been single-sided deaf you can now hear audio in true stereo via a headphone for the first time! That is what "2E1"™ means: "Two Ears in One"™! Separate Left & Right side drivers producing true stereo audio for one ear! No more mixing of the two-channel stereo audio signal into one-channel mono! How the 2E1 came about: I suffered total hearing loss in one ear from an acoustic neuroma tumor and while I was in recovery from the tumor removal surgery I was looking to relax via activities involving listening to headphones. I found I could no longer use and enjoy my old normal bilateral headphones in all the ways I was used and while this was expected, I was frustrated to find there were no stereo headphones made by any major headphone manufacturers for people with single-sided deafness (SSD)/unilateral hearing loss (UHL). If you listen to music via normal bilateral stereo headphones some sound is played through the Left channel and some is played through the Right channel of the stereo headphone and if you are deaf in one of your ears you will naturally miss out hearing one of the channels. I thought a solution to hearing in stereo with one ear were one sided headphones that they describe as "DJ stereo headphones" but I was disappointed because upon introspection those types of DJ headphones are not true stereo headphones due to the fact that if they only have one speaker driver to an ear it is still only mono sound. This realization inspired me to make good use of my Aviation Airframe & Powerplant background and design and create my own stereo headphones that will reproduce stereo into one ear for me and the end result was so successful I started making these headphones that I have dubbed the 2E1 for "Two Ears in One" for others in the single-sided deaf community. For those diagnosed with an acoustic neuroma, also known as vestibular schwannoma, I wrote about my post surgery recovery experiences so as to help inform others going through this: https://2e1headphones.com/blogs/about-product/my-post-acoustic-neuroma-also-known-as-vestibular-schwannoma-surgery-reddit-posts What I am doing with my 2E1 design: Basically the sounds coming from stereo drivers are individual mono sounds being played on the Left or Right channel to create a stereophonic sound, a method of sound reproduction that creates an illusion of a multi-directional audible perspective. If you are unilaterally deaf you naturally miss out on this stereo Left/Right audio positioning with normal stereo headphones. While they do have mono conversions of the stereo sound to the headphone speakers, I found that mono-mixed audio makes the music sound "flat" to me knowing what it sounded like before my unilateral hearing loss. Mono-mixers take the Left and Right two channels and blends them into one channel and eliminating the stereo effect and mono-mixed audio is useless for sound localization in PC/Console gaming. My 2E1 headphones preserve the stereo two channel sound with separate L/R drivers housed in one ear-cup and thus getting true stereo sound and stereo panning effects going into your one ear. My 2E1's really are true stereo into a single ear headphones where there are separate Left and Right channel drivers playing into one ear to create a true two channel stereo experience via a headphone for the single-sided deaf. The preserved two channel stereo audio sounds richer and fuller than it would if the two channel stereo signal was mono-mixed. With my 2E1 design, I'm positioning both the separate Left/Right driver channels inside a single ear-cup on the 2E1 headphone in a staggered spacing I call a "Flying Echelon" formation. Having separate magnet drivers staggered in one ear-cup of the headphone allows your one ear to better hear the stereo panning effect between the two individual L/R speaker drivers with one ear, in other words true two-channel stereo sound going into one ear! Inside the 2E1's ear-cup the Left driver is in the up position and the Right driver is in the down position so you can hear the preserved separated two-channel stereo signal with your one ear (as this illustration shows): Additionally, I'm placing the two individual L/R speaker drivers into the headphone ear-cup in what I call the Flying Echelon staggered formation (see diagram below). In my 2E1 proprietary process the individual Left and Right channel drivers are mechanically secured (no glues are used) to an acoustic diaphragm that free floats inside the ear cup (hence flying) which aids in improving their sound stage. In the Flying Echelon staggered formation the right driver in the down position closest to the ear and the left driver is positioned in the up position and staggered/stepped back so the left and right drivers are not in parallel alignment (hence they are in staggered echelon formation). This echelon (staggered) spacing of the speaker drivers for 2E1 headphones is designed to enhance your one ear's ability to experience the stereo panning effect without distortion of the audio signal. You don't need to tell me what side you are deaf in when ordering. In my 2E1's drivers configuration, the side with the cable is the side with the two L/R drivers that you place to your working ear. There is no Left or Right side orientation for the 2E1 stereo headphone because the Left and Right drivers are contained in the one ear-cup with the Left driver in the up and staggered back position and the right driver in the down position closer to the ear. To hear, just place and center the ear-cup with the L/R drivers to your functioning left or right ear and the hollow ear-cup side to your deaf ear. Once you get your hands on the 2E1, how to use it is simple and self-explanatory. The 2E1 comes to you plug-and-play ready to work, with no assembly or batteries required. All you would have to do is place the 2E1 on your head like any normal stereo headphone and plug it into your smartphone, computer, gaming console or any stereo/audio device and your one ear will hear in two-channel stereo. How my 2E1's Flying Echelon™ Left/Right Driver formation works for in aiding hearing stereo with one ear: The way my Flying Echelon™ configuration works is based on the observed phenomenon that sound level is dependent on how close the sound source is to your ear. The drivers are affixed separate to the ear-cup housing (hence "flying" designation) and are staggered (hence the "echelon" designation) inside the ear-cup of the headphone. With the Flying Echelon™ formation the Right side stereo driver is in the down position and closer against the ear and the Left side stereo driver is in the up position and recessed slightly back and away from the ear, thus making it easier for your one ear to have the ability to hear the stereo panning effect between the individual Left and Right drivers. The Flying Echelon staggering also functions in conjunction with a acoustic resonance enhancing diaphragm that the drivers are mechanically attached to inside the ear-cup housing that works in harmony with the drivers to produce an effect that enhances the high fidelity drivers' dynamic audio performance. You have to hear it and feel it pumping to believe it! (See my diagram of how the Flying Echelon staggering works):All my 2E1 headphones have a form of the Flying Echelon (with the exception of the 2E1 Audiophile-see it's description below) headphone models incorporate a version of my Flying Echelon staggering of the Left/Right speaker drivers to produce a perceptible sound contrast (f and p) between the individual Left/Right drivers housed inside the ear-cup that your one ear can perceive. You can center the ear-cup over your working ear for a more balanced sound between the Left/Right channels or or move the ear cup up or down to accentuate hearing one channel over the other. Increasing/Decreasing volume also allows you to identify if sound is coming from the Left or Right stereo channels: lowering volume allows you to hear the channel separation better and increasing volume blends the L/R channels sounds more. Additionally, the stereo panning effect is accentuated by the staggering of the L/R channels via the Flying Echelon™ staggering of the speaker drivers.My 2E1's Flying Echelon™ staggered configuration of the Left/Right drivers aids your one ear's ability to pick up the stereo panning effect between the Left and Right drivers by using the staggered distance spacing of the speakers to create a differentiation in the audio dynamics between the Left and Right drivers. In musical theory, Musical Dynamics refers to the volume of sound using the Italian terms of piano (soft) and forte (loud). My "flying echelon's" staggered spacing of the L/R drivers creates the piano (and forte effect. The right channel's driver is closer to the ear being designated as forte (f) and the left channel driver is staggered back being designated as piano (p). This f and p audio dynamic contrasting of the L/R drivers created by the Flying Echelon staggering is what helps your one ear hear the the stereo panning. Listening to the 2E1 headphones with the Flying Echelon L/R staggering in one ear cup thus preserves audio's original stereo mix that would be destroyed by mono mixing while helping your one ear hear the stereo panning effect making the audio being heard sound full and vibrant compared to mono mixed audio.How the 2E1 works for locating left/right sound origins while gaming for the Single-Sided Deaf: For those interested in my 2E1 for sound direction locating in gaming with one ear, here is my blog link where I summarily explain how the 2E1 has three methods that can be utilized by the single sided deaf in identify gaming left/right locational sound cues with one working ear: https://2e1headphones.com/blogs/about-product/how-the-2e1-two-ears-in-one-true-stereo-headphones-for-the-single-sided-deaf-works-for-sound-locating-gaming-sound-cues-with-one-ear What I am doing with my various 2E1 builds: I assemble my 2E1 headphones from new, high quality name brand components that I found work and fit together best for this project. I use on-ear stereo headphone magnet drivers from Koss (which are high fidelity rated) and Panasonic (which have XBS port boosted bass) that I modify and insert into premium name branded passive noise canceling hearing protection earmuffs in my innovative "Flying Echelon™" staggered drivers configuration (except the 2E1 Audiophile model). Like all earmuff hearing protectors, they are passive noise cancelling and are designed to fit tightly but comfortably on the head and over the ears and are all designated as one size fits most for adults and children (please keep in mind that a tight fit is standard for all hearing protection earmuffs). I incorporate my self developed proprietary enhancements on the drivers I use improving their performance over their factory settings. The hearing protectors that I'm converting into 2E1 stereo headphones were selected due to their sturdy, quality construction, comfortable and long lasting ear cushions that are great at blocking ambient noise so all you hear is the sounds coming from your speaker drivers. While all my 2E1 headphones have a form of the "Flying Echelon™" staggered drivers configuration (except the 2E1 Audiophile model - see description below), the "2E1 Pro Ears (gold lettering) and Ultra Gel (platinum lettering) models" have the best and most acute versions of the Flying Echelon configuration (see The "2E1 Pro Ears" specifications and illustration below on how my Flying Echelon speaker formation works) to provide the maximum aid for your one ear to hear stereo panning effects in high fidelity audio. For added comfort I also incorporate vents into the "deaf-side"/hollow ear-cup to help keep the deaf ear cool and comfortable and for ease of differentiation as standard for all 2E1 models. Modifications/add-ons available to the 2E1 headphones (like adding a microphone for gaming): For the 2E1s headphones that do not come with a microphone, they can be easily modified by the end user with an add-on microphone to convert the 2E1 headphones into a headset. I recommend using the Antlion Mod Mic as I show here: https://www.reddit.com/user/Biblos_Geek/comments/k15xm9/how_to_add_a_microphone_to_your_headphone/In some cases you may find that you may need to pair up the 2E1 headphone with a headphone DAC/Amp. Headphone amps are recommended if your 2E1 will be in use with weakly amplified devices like some soundcards, portable music players, smartphones, and other portable audio devices that tend to need a headphone amp pairings in order to get the best powered audio signal from high (25+ ohms) impedance headphones (this is generally true for all brands of high 25+ ohms impedance headphones). See this review by someone who followed my general advice: https://www.reddit.com/r/MonoHearing/comments/hcykh5/hearing_music_better_than_i_did_30_years_ago/fvjmkbr/If the length of the audio cable needs to be longer for your needs you can extend it with a simple 3.5mm male-to-female audio extension cable. I would be happy to advise you on how to do all this. I will add vent holes for free on the speakers side of the Sports Bluetooth model to better aid your hearing of ambient noises of the surrounding environment. Contact me with this request after your purchase i(n some cases my 2E1's are also being used by people who have bilateral hearing (hearing in both ears) so as to keep one ear free to monitor the surrounding environment while listening to stereo in the other ear). Any 3.5mm audio jack capable adapters will work with the 2E1. ~ ~ ~ I have created the following 2E1 headphone model variations to meet various budgets and usages. If you need advice on which 2E1 model is best for your planned usage please do not hesitate to ask for my recommendation. ~ ~ ~The 2E1 "Pivotal", "Ucho/Ear" & "L1" Headphone Components Descriptions"Panasonic XBS" drivers: Panasonic made (RP-HT21) 30mm large diameter neodymium drivers with XBS bass boost port that magnifies low-frequency sound for full, robust pumped up bass response Panasonic drivers are arranged in my innovative "Flying Echelon™" staggered configuration with Left driver in the up position and staggered back from Right driver in the down position nearer your ear embedded with an acoustic diaphragm Compatible with all smartphones, computers, gaming consoles and all audio devices that use a 3.5mm stereo jack output 3.5mm right angled jack for added durability to prevent shorting and the approximately 4' long audio cable threads comfortably through clothing and bags 100 dB Sensitivity (The consensus is that exposure to sounds louder than 85 to 90 decibels over an extended period of time can contribute to hearing loss so please always keep your listening volume at a safe level.) Stress relief of soldered wired connection to the drivers for added wired connection durability is standard on 2E1 all models 24 Ohms Impedance (Headphones with high impedance (25+ ohms, approximately) tend to need more power to deliver higher audio levels. High impedance protects from damage caused by overloading and can also be used with a wider range of audio equipment but may require a headphone amp pairing for low voltage devices like portable music players, smartphones & wireless gaming controllers, etc. to achieve optimum audio performance.) 1000 mW(*IEC) Power Handling Capacity 16Hz - 22 kHz frequency response for natural-sounding mids and highs along with resonant XBS bass port boost and natural treble 2E1 Pivotal headband ($60):Made from either the Jorestech or Cyber Acoustic brand hearing protectors (per my discretion) housing the Panasonic XBS driversPivoting and comfortable adjustable headband's size fits most adults and children Lightweight construction approximately 7 ouncesPassive ambient noise cancellation allows you to better hear your sounds at lower volume and does not allow sound to leak outHollow ear-cup for the deaf ear is vented for cooling comfortComfort fit with removable/replaceable padded leatherette ear cushions for all day wear and can be worn comfortably with eyeglasses, hearing aid devices 2E1 Ucho/Ear Folding Portable headband ($85 NEW DESIGN!): Made using Caldwell premium folding hearing protectors housing the Panasonic XBS drivers One size fits most adults and children Durable stainless steel banded retractable headband and super soft foam ear-pads over shockproof ear-cups shell Compact folding designHeadphone weight approximately 8.2 ounces Passive ambient noise cancellation allows you to better hear your sounds at lower volume and does not allow sound to leak out Can be worn comfortably with eyeglasses, hearing aid devices Hollow ear-cup for the deaf ear is vented for cooling comfort and can be used as a convenient storage compartment for rolling up and storing the cable inside 2E1: L1 Headband ($75): See the 2E1-L1 model reviewed here @ https://www.reddit.com/r/MonoHearing/comments/c8a7vh/2e1_two_ears_in_one_l1_headband/Made from a converted Howard Leight/Honeywell L1 model hearing protector housing the Panasonic XBS drivers Telescopic adjustment features a steel wire core for added durability Padded foam headband for long-wearing head comfort Can be worn comfortably with eyeglasses, hearing aid devices Passive ambient noise cancellation allows you to better hear your sounds at lower volume and does not allow sound to leak out Hollow ear-cup for the deaf ear is vented for cooling comfort and can be used as a convenient storage compartment for rolling up and storing the cable inside One size fits most adults and children Headphone weight approximately 8.3 ounces The L1 is suitable for adults and is the ideal headphone for SSD children because of its super durable build quality and ease in cleaning/replacing the ear cushions Snap-in designed super-soft replaceable ear cushions with Stay-Cool Air Flow Control technology allows for quick and easy cleaning and replacement 2E1 Panasonic Dr. Meter Headphone (without mic $85) & Headset Specifications (with mic $95):Panasonic made (RP-HT21 for headphone)&(RP-HT21M for headset) 30mm large diameter neodymium drivers with XBS bass boost port that magnifies low-frequency sound for full, robust pumped up bass response with an inline microphone with smartphone remote buttonPanasonic drivers are arranged in my innovative "Flying Echelon™" staggered configuration with Left driver in the up position and staggered back from Right driver in the down position nearer your earHeadset model features inline mic suitable for PC, gaming console & smartphone use with remote button control3.5mm right angled jack for added durability to prevent shorting and the approximately 4' long audioStress relief to the drivers for added wired connection durability is standard on 2E1 all modelsMade from converted Dr. Meter ear protectors that provide passive ambient noise blocking, allowing you to hear your audio at lower volumes and prevents sound from leaking outHollow ear-cup over the deaf ear is vented for cooling comfort and can be used as a convenient storage compartment for rolling up and storing the cable insideFolding padded headband has soft ear cushions and is adjustable to fit most adults and children and comes with a drawstring storage bag **THE 2E1 HIGH FIDELITY "PRO" HIGH FIDELITY HEADPHONE MODELS!** After numerous requests made to me from single-sided deaf gamers, musicians and audiophiles for a high fidelity headphone incorporating the 2E1 system, I am pleased and thrilled to offer my highly praised 2E1 high fidelity rated headphone models! Put these 2E1 high fidelity rated headphones over you're one ear and you will immediately feel and hear and understand why it is so well received! The 2E1 High Fidelity Headphone Models for Gaming and Music Listening I build both of my 2E1 Pro Ears models (2E1 Pro Ears with gold letters & 2E1 Pro Ears Ultra Gel Folding with platinum letters) by converting the Altus Brand Pro Ears hearing protectors. The Pro Ears (Gold Lettering) model is made with genuine leather visco-elastic foam ear cushions and a leather padded headband and the Pro Ears Ultra Pro Ears model (Platinum Lettering) which is compact and foldable with comfortable, stay cool aviation gel ear cushions and a padded steel spring headband. For both my 2E1 Pro Ears (gold and platinum) models I incorporate the legendary Koss KSC75 high fidelity stereo headphone drivers that I mechanically attach to an acoustic diaphragm that is arranged inside one ear-cup in my unique and innovative Flying Echelon™ staggered drivers configuration for aiding a single-sided deaf person's stereo panning perception.Sample of reviews left for the 2E1 Pro Ears (gold lettering) model:_______________________________________________________________________________________________________________________________________ _______________________________________________________________________________________________________________________________________Of all my 2E1 models the "2E1 Pro Ears Ultra Gel Folding" model (platinum letters) is the headphone I would recommend for serious single-sided deaf gamers, musicians and audio professionals of every kind that have a need to differentiate as best as possible to their hearing abilities in one ear between the Left/Right sound origins in a stereo audio signal (it is also the ideal model for those who value long wearing comfort in a headphone). The 2E1 drivers housing can also be moved around the working ear to quickly sound check left and right drivers. The "2E1 Pro Ears Ultra Gel Folding" model is a "must-have" for every gamer who has single-sided deafness!While all my 2E1 headphones have a version of the "Flying Echelon" staggering, due to the ear-cup geometry of the "2E1 Pro Ears Ultra Gel Folding" model it has the most advanced version of the "Flying Echelon" staggered spacing where the difference between Left and Right stereo channels can help you hear the stereo panning via the spacial staggered gap. PLEASE FEEL FREE TO ASK ME WHICH 2E1 HEADPHONE VERSION WOULD BEST MATCH YOUR PLANNED USE. The Pro Ears' Flying Echelon staggering formation of the Left/Right drivers is specifically designed for the single-sided deaf listener to maximize their one ear's ability to hear stereo panning in music and sound localization effects in computer gaming to the maximum without distorting the high fidelity quality of the audio signal produced by the Left/Right drivers that you hear. Your one ear will be amazed at the hi-fi stereo sounds produced through the Koss' acclaimed hi-fi rated drivers in my Flying Echelon staggering formation which are housed in this ultra-comfortable Pro Ears headphone. The 2E1 Pro Ears' Flying Echelon staggered spacing opens up new audio listening dimensions that have previously been denied to the SSD headphone user stuck with normal headphones where they can only hear one side or listening to stereo-to-mono mixed audio options. See and hear the 2E1 Pro Ears live reviewed while gaming to see why the 2E1 Pro Ears was called a game changer for the SSD headphone user! https://www.youtube.com/watch?v=0xPtMYL9bW8 , https://www.youtube.com/watch?v=aPfUUcP8CYg&t=82s & https://www.youtube.com/watch?v=FWTG44-w1ecThe "2E1 Pro Ears" ($170 gold lettering): "2E1 Pro Ears" model uses Koss KSC75 high fidelity drivers Made in the USA by Altus Brands, a veteran-owned company The "2E1 Pro Ears" (gold lettering) model has comfortable, snug fit, ProForm leather ear seals cushions with internal visco-elastic memory foamOne size fits most children and adults Hollow ear-cup side like all 2E1 headphones for the deaf is is vented to help with ear cooling and can be used as a convenient storage compartment and can be used as a convenient storage compartment for the audio cable Can be worn comfortably with eyeglasses, hearing aid devices Stress relief of the soldered wired connection to the drivers for added wired connection durability is standard on all models60 Ohms Impedance (Headphones with high impedance (25+ ohms, approximately) tend to need more power to deliver higher audio levels. High impedance protects from damage caused by overloading and can also be used with a wider range of audio equipment but may require a headphone amplifier pairing for low voltage devices like portable music players, smartphones & wireless gaming controllers, etc. to achieve optimum audio performance.) 101 dB SPL/1mW Sensitivity (The consensus is that exposure to sounds louder than 85 to 90 decibels over an extended period of time can contribute to hearing loss so please always keep your listening volume at a safe level.) 15-25,000 Hz frequency response Total Harmonic Distortion (THD) 0.2 % Koss' computer-optimized neodymium, iron, and boron rare-earth magnet drivers deliver amazing clarity at any volume and offer deep bass performance for an extended frequency response 45 mm large titanium element drivers deliver accurate full spectrum sound reproduction with little distortionHeadphone weight approximately 10 ounces Passive ambient noise cancellation allows you to better hear your sounds at lower volume and does not allow sound to leak out The 3.5 mm audio plug is angled for durability and is compatible with all smartphones, computers, gaming consoles and audio devices that use a 3.5mm output jackHollow ear-cup for the deaf ear is vented for cooling comfort and can be used as a convenient storage compartment for the approximately 4' long audio cable Enjoy greater volume despite low-voltage portable devices "2E1 Spartan Sporta Prohear" ($160 Spartan war helmet decal):Uses the Koss SportaPro ENDURANCE SERIES high fidelity rated drivers. Ideal choice if you want a more dynamic high fidelity audio with a deep bass response in a headphone for gaming or music listeningLeft/Right drivers housed in one ear-cup using my Flying Echelon staggering (see description and diagram above on how the Left/Right drivers are arranged inside ear-cup) with Left driver in the up position and staggered back and Right driver in the down position mechanically affixed to an acoustic diaphragm to produce an enhancing resonance effect making the audio sound deep, full and reverberating Made from Prohear hearing protectors with with a padded steel spring folding headband for compact portabilityOne size fits most children and adultsHollow ear-cup side like all 2E1 headphones for the deaf is is vented to help with ear cooling and can be used as a convenient storage compartment and can be used as a convenient storage compartment for the approximately 4' long audio cableCan be worn comfortably with eyeglasses, hearing aid devices Stress relief of the soldered wired connection to the drivers for added wired connection durability is standard on all 2E1 modelsKoss Porta Pro drivers are made from oxygen-free copper voice coils and dynamic elements that deliver deep bass high fidelity rated clear sounds. Exceptionally wide frequency responses of 15-25,000 Hz 60 Ohms Impedance (Headphones with high impedance (25+ ohms, approximately) tend to need more power to deliver higher audio levels. High impedance protects from damage caused by overloading and can also be used with a wider range of audio equipment but may require a headphone amplifier pairing for low voltage devices like portable music players, smartphones & wireless gaming controllers, etc. to achieve optimum audio performance.)101 dB SPL/1mW Sensitivity (The consensus is that exposure to sounds louder than 85 to 90 decibels over an extended period of time can contribute to hearing loss so please always keep your listening volume at a safe level.)Large drivers deliver accurate sound reproduction with little distortionPassive ambient noise cancellation allows you to better hear your sounds at lower volume and does not allow sound to leak outThe 3.5 mm audio plug is angled for durability and is compatible with all smartphones, computers, gaming consoles and audio devices that use a 3.5mm output jackHollow ear-cup for the deaf ear is vented for cooling comfort and can be used as a convenient storage compartment for the approximately 4' long audio cable"2E1 Pro Ears Ultra Gel Folding" ($190 platinum lettering):The "2E1 Pro Ears Ultra Gel Folding" model uses Koss Porta Pro drivers in the most advanced version of the "Flying Echelon" spacing that best allows you to differentiate the left from the right stereo channels with one ear for serious gaming or audio work Made in the USA by Altus Brands, a veteran-owned companyThe "2E1 Pro Ears Ultra Gel Folding" model has the keep cool ultra comfortable aviator gel ear seal cushions with a padded steel spring folding headband and are designed to remove the pressure from your head and comfortable seal around your earsOne size fits most children and adultsHollow ear-cup side like all 2E1 headphones for the deaf is is vented to help with ear cooling and can be used as a convenient storage compartment and can be used as a convenient storage compartment for the approximately 4' long audio cableCan be worn comfortably with eyeglasses, hearing aid devices Stress relief of the soldered wired connection to the drivers for added wired connection durability is standard on all 2E1 modelsKoss Porta Pro drivers are made from oxygen-free copper voice coils and dynamic elements that deliver deep bass high fidelity rated clear sounds. Exceptionally wide frequency responses of 15-25,000 Hz 60 Ohms Impedance (Headphones with high impedance (25+ ohms, approximately) tend to need more power to deliver higher audio levels. High impedance protects from damage caused by overloading and can also be used with a wider range of audio equipment but may require a headphone amplifier pairing for low voltage devices like portable music players, smartphones & wireless gaming controllers, etc. to achieve optimum audio performance.)101 dB SPL/1mW Sensitivity (The consensus is that exposure to sounds louder than 85 to 90 decibels over an extended period of time can contribute to hearing loss so please always keep your listening volume at a safe level.)Large drivers deliver accurate sound reproduction with little distortionPassive ambient noise cancellation allows you to better hear your sounds at lower volume and does not allow sound to leak outThe 3.5 mm audio plug is angled for durability and is compatible with all smartphones, computers, gaming consoles and audio devices that use a 3.5mm output jackHollow ear-cup for the deaf ear is vented for cooling comfort and can be used as a convenient storage compartment for the approximately 4' long audio cableThe 2E1 Sports Bluetooth folding headphone ($195) wireless model compatible with all smartphones is made from Koss' legendary KSC35 high fidelity drivers reintroduced as wireless Bluetooth headphones that I rework and arrange in my 2E1's Flying Echelon staggering inside the super comfortable and lightweight Peltor Sports ear protectors. The Koss KSC35s wireless Bluetooth drivers feature dynamic elements for an exceptionally wide frequency response of 15-25,000 Hz. You’ll revel in the high fidelity sound quality they offer, and love the superior volume – even with low-voltage portable devices. The 2E1 Sports Bluetooth folding headphones are the perfect companion headphones for the active single-sided deaf listener on the go. The 2E1 paring of Koss' hi-fi KSC35 Bluetooth enabled drivers with the Peltor Sports ear protectors creates the perfect portable hifi stereo listening convenience in a compact folding headphone. Koss KSC35 drivers are made from oxygen-free copper voice coils that improve signal transmission and conduction for cleaner, clearer high fidelity rated sound. Computer-optimized neodymium iron boron magnet Koss KSC35 drivers structures deliver great high fidelity rated sound quality and volume and deliver exceptionally wide frequency responses of 15-25,000 Hz Koss KSC35 drivers arranged in the Flying Echelon staggering 6+ Hour Lithium Rechargeable BatteryUSB charging cable and Koss embossed carrying pouch for the charging cable included In-Line Microphone & Remote (Play/Pause, Start/Stop, Volume, Answer/End, etc.) ideal for smartphone use Connect via Bluetooth version 4.2 ideal for all smartphone model pairings Headphone is made from 3M's Peltor Sport Shotgunner II compact folding ear protector with padded spring steel headband and super soft foam cushionsOne size fits most adults and children Headphone weight approximately 9.2 ounces Passive ambient noise cancellation allows you to better hear your sounds at lower volume and does not allow sound to leak out Can be worn comfortably with eyeglasses, hearing aid devices Hollow ear-cup for the deaf ear is vented for cooling comfort and can be used as a convenient storage compartment for the attached In-Line Microphone & Remote Free vents upon request at time of purchase added on the 2E1 Sport's ear-cup side with the drivers to aid in hearing ambient sounds The 2E1 Audiophile headphone ($165) is design concept I came up with for single sided deaf listeners that are only interested in using my 2E1 headphones for hearing audio/music and not for using them for spatial awareness in gaming or any other such applications. The 2E1 Audiophile model incorporates the Koss KTXPRO1 High Fidelity drivers in what I call a "Flying V Drivers™" formation where the drivers are mechanically attached to an acoustic foam (hence "flying") in a concave formation (hence "V" formation) inside the noise isolating ear cup where the drivers are angled so as to direct the audio of the Left and Right stereo channels directly to your ear for hi-fi sound that is a superior sounding to electrically down-mixing the stereo signal into mono. Since the ear-cup with the "Flying V Drivers" envelops the ear it is also slightly vented to prevent uncomfortable acoustic pressure. Because the Left and Right drivers for both 2E1 Audiophile models "Flying V Drivers™" formation are not staggered like the rest of my other 2E1 Flying Echelon headphones so the stereo panning effect is subdued (so it will not help your one ear in identifying sound origin between left and right channel drivers) but its "Flying V Drivers™" formation still produces a more fuller sound than if the stereo signal was down-mixed into mono. The audio dynamics for the Left and Right drivers are spaced at a concave V shaped angle and not staggered as in the 2E1 Flying Echelon models (see description above) but they will allow the preserved stereo audio signal to be heard with one ear for audiophile hi-fi listening needs. An audiophile is a person who is enthusiastic about high-fidelity sound reproduction and for the unilaterally deaf headphone user that is just not possible if a stereo audio mix is down-mixed into mono audio until now with the 2E1 Audiophile headphone models. Additionally, the 2E1 Audiophile headphone model is the ideal headphone for those who use hearing aid devices such as cochlear ear implants. For Cochlear Implant users, the 2E1 Audiophile's ambient sound isolating ear cup envelops the ear. The ear that wears the microphone processor that sits behind the ear is enveloped inside the 2E1 Audiophile headphone ear-cup and the super soft cushioned ear-pad comfortably rests against the wire that connects the microphone processor to the external transmitter. I worked with cochlear implanted Beta testers whose feedback on what 2E1 headphone model worked best for them and what they were looking for in a headphone was invaluable to me and I take every opportunity to thank them. The 2E1 Audiophile Headphone model is made from 3M's Peltor Sport Bull's Eye Hearing Protector with a spring steel headband and super soft foam cushions One size fits most adults and children Headphone weight approximately 10.6 ounces Hollow ear-cup for the deaf ear is vented for cooling comfort and can be used as a convenient storage compartment for the approximately 4' long audio cableEar-cup with the "Flying V Drivers™" envelops the ear it is also slightly vented to prevent uncomfortable acoustic pressure. Can be worn comfortably with eyeglasses Designed with hearing aid devices like cochlear implant users in mind (thank you to my cochlear implant Beta Testers for their feedback) because the ear is enveloped inside the isolating ear-cup. Passive ambient noise cancellation allows you to better hear your sounds at lower volume and does not allow sound to leak outThe 2E1 Audiophile model has their high fidelity rated left/right drivers arranged in the "Flying V Drivers™" formation for audio listening only (does not help in locating gaming sound origins)The 2E1 Audiophile model uses high fidelity rated titanium layered drivers taken from Koss KTXPRO's and comes with an in-line volume control with a straight 3.5mm plug Frequency Response 15-25,000 Hz, 60 Ohms Impedance If you are unilaterally deaf and just want a 2E1 headphone to listen to the preserved stereo audio in high fidelity (and do not necessarily need to know the left/right channel mix) then I highly recommend the 2E1 Audiophile model using the "Flying V Drivers" formation to you. ++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++ The 2E1 wired Hifi "PRO" Headsets (with microphones)!!Introducing the new high fidelity rated 2E1 Koss Porta Prohear Limited Edition Black Gold, the 2E1 MASSDROP Koss X Smartphone HiFi Headset and the XBS bass boosted 2E1 Panasonic Dr. Meter Headset with the left and right drivers inside one headphone earcup that allows your one ear to hear and perceive the stereo panning effect. 2E1 Koss Porta Prohear Limited Edition Black Gold Headset Specifications ($240):The Koss Porta Pro Limited Edition Black Gold headset comes with an in-Line microphone, sliding volume control and touch remote control button. The oxygen free copper voice coils and dynamic elements allow the drivers to deliver exceptionally deep bass and a remarkably wide frequency High Fidelity audio response.Koss Porta Pro Limited Edition Black Gold Pro drivers are made from oxygen-free copper voice coils and dynamic elements that deliver deep bass high fidelity rated clear sounds. Separate Left and Right drivers arranged in the Flying Echelon staggering inside one ear-cupExceptionally wide frequency responses of 15-25,000 Hz 60 Ohms Impedance101 dB SPL/1mW Sensitivity (The consensus is that exposure to sounds louder than 85 to 90 decibels over an extended period of time can contribute to hearing loss so please always keep your listening volume at a safe level.)Large 45 mm drivers delivers accurate (high fidelity) sound reproduction with little distortion and oxygen-free copper voice coils deliver deep bass and signal clarity3.5mm audio plug with built in stress relief for the 3.5' wire. The 3.5 mm audio plug is angled for durability and is compatible with all smartphones, computers, gaming consoles and audio devices that use a 3.5mm output jackMade from converted premium Prohear brand ear protectors that provide passive ambient noise blocking, allowing you to hear your audio at lower volumes and prevents sound from leaking outFolding padded headband has soft ear cushions and is adjustable to fit most adults and children and comes with a drawstring storage bagHollow ear-cup over the deaf ear is vented for cooling comfort and can be used as a convenient storage compartment for rolling up and storing the cable insideLeft/Right drivers are arranged in my Left/Right "Flying Echelon" staggering making them ideal for gaming and all stereo audio2E1 MASSDROP Koss X Smartphone HiFi Headset Specifications ($150):MASSDROP modifies the legendary high fidelity Koss KSC75 headphone into the Koss KSC75X headset by adding a one-touch remote for for controlling tracks and taking calls on the inline microphone and I take that and I rework it into my 2E1 headset The Walker's Edge hearing protector serves as the folding headband housing The 2E1 MASSDROP Koss X Smartphone HiFi Headset is ideal for talking/listening on smartphones, iPads and computers ++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++ ~ ~ ~These are links to independent Left/Right headphone tests to help 2E1 headphone users get attuned to the difference in how the individual Left/Right stereo channels will sound due to the 2E1's Flying Echelon staggered spacing of the Left/Right drivers: https://www.youtube.com/watch?v=2ZrWHtvSog4 & https://www.youtube.com/watch?v=91BUM3WhCfo For stereo music listening. here is a link to various heavily stereo effected music/audio (of all genres) for the single-sided deaf to listen to on the 2E1 Headphones: https://www.reddit.com/user/Biblos_Geek/comments/c1x2xd/stereo_effect_heavy_music_for_the_singlesided/ Please feel free to ask my recommendation for which 2E1 headphone model would be the ideal model for your intended use! ~ ~ ~!!! The 2E1 Vibe Cues Belt: Vibrational Directional Feedback Cues System for Deaf & Hard of Hearing Gamers !!!I am thrilled to present my "2E1 Vibe Cues Belt: Vibration Directional Feedback Cues System for Deaf and the Hard Of Hearing Gamers" that provides true haptic vibrational feedback cues for Deaf/Hard of Hearing gamers (but it works great for all types of hearing users!). If you are intending to use my 2E1 headphone for gaming I can also recommend pairing it with my new "2E1 Vibe Cues Belt" which I am selling here @ https://www.ebay.com/itm/283735564848. The 2E1 Vibe Cues Belt was designed for gaming but using it can also add enjoyment to music or movie watching/listening experiences. If you are single sided deaf and purchase any of 2E1 headphones at the same time as my "2E1 Vibe Cues Belt" I will include a microphone & headset Y splitter (so you can add your own game mic) and a headphone audio extension cord with built in volume control free of charge! Feel free to ask me about my current builds for directional vibrating gaming/music headphones for the single sided deaf (2E1+Vibe™) and the profoundly deaf in both ears headphone version (2VE: Two Vibrating Ears™). For more information and to watch my 2VE+Vibe be live reviewed and demoed go to www.reddit.com/r/MonoHearing/comments/k49j84/the_2e1vibe_headphone_for_the_single_sided_deaf/. If you are interested in me building you one of my vibrating headphones please contact me via Reddit under "/u/Biblos_Geek". ~ ~ ~****NEW!****Check out my hand-sewn 2E1 Headphone draw string storage bags personally sewn by me, Biblos Geek! I will refund back the storage bag's shipping charges in full if it is purchased at the same time as my 2E1 Headphones because they will ship together! ebay.com/itm/284132278768?var=587375184192as well as my latest creation:Eyeglass Ear Frame Socks! Hygienic Slip-On 100% Cotton Covers hand-sewn by me, Biblos Geek! https://www.ebay.com/itm/285091926218The Eyeglass Hygienic Frame Covers are hand sewn by me from 100% t-shirt grade soft cotton and are ideal for post-surgery hygienic wear and can be worn while exercising to absorb sweat and oils or worn about the house or out in public for daily wear if needed for comfort!~ ~ ~All component parts used in my 2E1 model conversions are guaranteed to function and to be brand-new-out-of-the-box. The 2E1's are personally hand built by myself in my NYC workshop to the highest build quality but please forgive any superficial blemishes that may arise from the handcrafted build process. Additionally to eBay's consumer guarantees, for as long as I am making my 2E1s I will provide personal lifetime technical support and also repair or replace the 2E1s purchased from me for free or at cost if they ever malfunction or get damaged (per my discretion, offer not applicable to ear cushion replacements and you will need to pay for shipping both ways), so please save your receipts! YOU DON'T NEED TO BUY ANY PROTECTION PLAN!Please allow me about a week to build and ship the 2E1 stereo headphone to you (I can usually beat this estimate) and I also happily ship internationally! The available default colors are those shown in the pictures but in the event that the default colors are not available from my suppliers at time of your purchase I will substitute with another similar (unisex) color. PLEASE CONSIDER SHIPPING VIA PRIORITY MAIL TO AVIOD THE ANNOUNCED PROJETCED MAIL DELIVERY SLOWDOWNS!.For those people who are sensitive or concerned about chemical smells, I do not use glues of any kind in my 2E1 build. The 2E1 headphone's Flying Echelon staggered embedded speaker drivers are secured inside the ear-cup via a pure mechanical build and are fully serviceable and customizable. For those sensitive about their SSD condition I do not brand the 2E1 headphones in any way to indicate it is for use by a single-sided deaf person. The Single Sided Deaf community has a major need for high fidelity stereo headphones that is not currently being fulfilled by any major headphone manufacturer so I contend my self-developed 2E1 stereo headphone creations can service that need. Positive reviews for the stereo headphone drivers and the hearing protection earmuffs that I convert into my 2E1 stereo headphones are widely attested to online. If you want to know ahead of purchasing the 2E1 headphones how well all my 2E1 models will sound and fit, then all you have to do is look up the online reviews for both the fit of the individual hearing protection earmuffs and the sound performance of the stereo headphones that have been submitted by a multitude of reviewers over the years. I contend that my 2E1 headphones can match normal bilateral stereo headphones in audio performance because I'm converting the well reviewed bilateral hearing stereo headphones from the selected major brands (Koss and Panasonic) into my 2E1 headphones to serve the single-sided deaf community's audio headphone needs. I'm constantly revising existing 2E1 headphone designs and adding new models to fit all budgets and usages, so please make sure to watch/follow me on eBay and Reddit. I'm very honored and humbled by the positive reviews my 2E1 stereo headphones are receiving (some of which I screenshot). I had first made versions of the 2E1 headphones for my own use during my post surgery recovery and found that making my 2E1s for others has been a great healing therapy for me in my own recovery from my unilateral hearing loss so I'm grateful to be of service and build my 2E1 "Two Ears in One" true stereo headphones for others in the single-sided deaf community. Thank you for allowing me to be of service to the unilateral hearing loss (UHL) / single-sided deaf (SSD) community! Normal 0 false false false EN-US X-NONE X-NONE MicrosoftInternetExplorer4
Price: 60 USD
Location: New York, New York
End Time: 2023-11-22T04:07:05.000Z
Shipping Cost: 7.99 USD
Product Images
Item Specifics
Restocking Fee: No
Return shipping will be paid by: Buyer
All returns accepted: Returns Accepted
Item must be returned within: 30 Days
Refund will be given as: Money back or replacement (buyer's choice)
Modification Description: Converted bilateral headphones into the 2E1
Use: Hearing Assistance
Custom Bundle: No
Color: Random Color
Fit Design: Headband
MPN: Does Not Apply
Modified Item: Yes
Earpiece Design: Ear-Cup (Over the Ear)
Brand: Unbranded
Form Factor: Headband
Type: Ear-Cup (Over the Ear)
Wireless Technology: Bluetooth
Model: E1
Connectivity: Wired, 3.5mm Jack, Bluetooth
Features: Unilateral Deaf Headphones, Single-Sided Deaf Headphones, Stereo Separate L & R Channels Going Into One Ear, No Mono-mixing, Adjustable Headband, Ambient Sound Mode, Built-in Microphone, Closed Back, Extra Bass, Foldable, Stereo
Microphone Type: Built-In
Cable Length: 3ft
Country/Region of Manufacture: United States
Impedance: 60 Ohms
Available Variations
Color: 2E1 Pro Ears
Price: 175 USD
Available Quantity: 51
Quantity Sold: 49
Color: 2E1 Sports Bluetooth
Price: 195 USD
Available Quantity: 28
Quantity Sold: 26
Color: 2E1 Audiophile
Price: 165 USD
Available Quantity: 36
Quantity Sold: 35
Color: 2E1: L1
Price: 75 USD
Available Quantity: 48
Quantity Sold: 48
Color: 2E1 Ucho/Ear Folding Portable
Price: 85 USD
Available Quantity: 22
Quantity Sold: 22
Color: 2E1 Pro Ears Ultra Gel Folding
Price: 190 USD
Available Quantity: 123
Quantity Sold: 118
Color: 2E1 Panasonic Dr. Meter Headset
Price: 95 USD
Available Quantity: 28
Quantity Sold: 27
Color: 2E1 MASSDROP Koss X Smartphone HiFi Headset
Price: 150 USD
Available Quantity: 2
Quantity Sold: 2
Color: 2E1 Koss Porta Prohear Ltd Ed Black Gold Headset
Price: 240 USD
Available Quantity: 26
Quantity Sold: 25
Color: 2E1 Pivotal
Price: 60 USD
Available Quantity: 18
Quantity Sold: 17
Color: 2E1 Spartan Sporta Prohear
Price: 160 USD
Available Quantity: 7
Quantity Sold: 7
Color: 2E1 Panasonic Dr. Meter Headphone
Price: 85 USD
Available Quantity: 3
Quantity Sold: 1
