Sennheiser Orpheus

Data

General

• Manufacturer: Sennheiser
• Model: Orpheus (HE 90/HEV 90)
• Years of manufacture: 1991 -
• Made in:
• Weight: 365 g (headphones), 13 kg (feed amplifier).
• Original price approx.: 19.500,- DM (UVP)

Technical data

• Principle: Electrostatic, open
• Coupling to the ear: circumaural
• Rated impedance:
• Rated power handling:
• Contact pressure: 4.6 N
• Frequency response: 25 - 75,000 Hz -3 dB (headphones), 10 - 20,000 Hz -0.25 dB (feed amplifier)

Distortion factor: < 0.1% at 110 dB, < 0.01% at 94 dB

• Sound pressure level: 118 dB
• Connector: HV connector 5-pin
• Cable length: 3 meters

Special Features

• gold vaporized 1 µm thin polymer foil as membrane
• real wooden case for storage
• power supply amplifier HEV 90 in tube technology
• power supply amplifier with line input and optical and coaxial digital input
• Power amplifier with outputs for 2 headphones HE 90

Remarks

• Limited to 300 pieces worldwide.
• pure handmade
• selected tubes
• The Orpheus is considered the best headphones in the world since its release until today.