Sennheiser Orpheus HE 90 headphone And HE90V Amplifier (1991)

Hello,

I want to showcase and explain the legendary 1991 headphones HE90 Orpheus.

Sennheiser Orpheus HE 90 headphones:

Model: Electrostatic Type
Release: 1991
Discontinued: 1995
Lifespan: 4+
Diaphragm: Open-back, diffuse-field compensated. Transducer principle
Frequency Band: 25Hz–75kHz, –3dB.
Distortion: <0.01% at 94dB, <0.1% at 110dB.
Maximum sound pressure level: 118dB.
Bias voltage: 500VDC.
Weight (excluding cable): 12.9oz (365gm).
Release Date Price: $12000.00
Today price: $30000.00
Units: #300

Introducing HE90 :

Inside Orpheus headphones it has high-strength glass and gold to give an amazing smooth texture filled sound.

Sound: Liquid warm. Very smooth. No harshness at all. Very detail and full of texture. This headphone has full of body weight that sounds big. It is the texture that makes this headphone shine. Can listen for hours without fatigue. It has a large sound-stage and drives sound very deep.

Very comfortable headphones to wear. Very roomy.

Sennheiser Orpheus HEV 90V amplifier:

Model: Tube headphone amplifier
Frequency response: 10Hz–20kHz, –0.25dB.
Distortion (1kHz): <0.01%.
Input sensitivity: 400mV.
Input impedance: 10k ohms.

There are six tubes in all, each protected by a metal casing.

The amp has an LED that flashes as its warming up

Very nice box with blue velvet interior.