LIMITED AVAILABILITY! 

Massdrop's collaboration with Koss to produce the KSC75X drivers is modified for the single sided deaf community to produce the high fidelity rated 2E1 Koss X Headset with an inline microphone. The dynamic drivers ensure detailed sound reproduction with a punchy bass response, and because the KSC75X is smartphone compliant, you can enjoy greater volume with low-voltage portable devices. These are great for gaming and music! 

• Koss KSC75X Drivers in one ear cup for full hifi stereo to one ear
• Drivers Magnet material: Neodymium iron boron
• Frequency response: 15 Hz–25 kHz
• THD = 0.2%
• Sensitivity: 101 dB/1 mW
• Impedance: 60 ohms
• Cable: Approx.. 4 ft (1.2 m)
• Connector: ⅛ in (3.5 mm)
• Microphone functionality: Answer/end call, play/pause song, skip track
• Link Dream Headband: Folding portable universal fit with soft memory foam ear pads
• 2E1 Flying Echelon: Staggered drivers for left/right stereo panning perception with one ear

I can also recommend purchasing my hand-sewn storage bags for your 2E1 headphone and I will refund the storage bag's shipping charges back when purchased at the same time as the 2E1 headphone since it will ship with your 2E1 headphone order.