OE-90 Open-Back Headphones
A 50 mm dynamic open-back at 300 ohms, built for a quiet room and a headphone amplifier rather than a phone.
Dispatch and delivery times are confirmed at checkout.
- Open back. A wide stage in a quiet room, and audible to anyone nearby
- 300 ohms: wants a headphone amplifier, not a phone socket
- Detachable cable and lift-off pads, both stocked as spares
- 330 g with light clamp, sized for long sessions rather than commutes
The detail
- Driver
- 50 mm dynamic
- Enclosure
- Open back
- Impedance
- 300 Ω nominal
- Sensitivity
- 97 dB / mW
- Frequency response
- 10 Hz – 39 kHz (manufacturer stated)
- Weight
- 330 g without cable
- Cable
- 3 m detachable, dual 3.5 mm to 6.35 mm
- Earpads
- Replaceable velour, 22 mm depth
The OE-90 is the pair we hand someone who has a room they can shut the door on. It is open at the back, which means the driver works against the room rather than a sealed cup, and it means everyone else in the room hears what you are hearing. That is the trade you are making.
What drives it
At 300 ohms nominal and 97 dB per milliwatt, this is not a headphone to run from a laptop socket. It will make sound, but it will run out of headroom before it runs out of volume. Pair it with the DA-1 or any amplifier that can supply a few hundred milliwatts into 300 ohms.
Fit and weight
330 g without the cable, with a self-adjusting headband and 22 mm deep velour pads. Clamp is deliberately light. If you want isolation on a train, this is the wrong headphone and the TW-20 is the right one.
Parts you can replace
The pads lift off without tools and the cable is a detachable 3.5 mm mono jack at each cup, so a damaged cable is a cable, not a headphone. We stock both for this model.