 |
 |
 |
|
|
|
|
|
|
|
|
The Sennheiser Orpheus Reference Headphones |
DISCONTINUED |
  |
  |
 The Orpheus combination offers the audiophile the ultimate
in reference sound reproduction.HE90 headphoneElectrostatic transducer principle1 µm diaphragm, gold-plated using vapour techniqueElectrodes made from special glassHEV90 amplifierHigh end valve (vacuum tube) amplifierAll valve analogue signal pathOn-board dedicated bitstream digital to analogue converter |
|
  |
  |
|
Specifications for the Sennheiser Orpheus HE-90 Headphones |
|
| Frequency response | 7-100,000 Hz (-10 dB) 14-85,000 Hz (- 6 dB) 25-75,000 Hz (- 3 dB) |
| Frequency range | diffuse field equalised |
| Transducer principle | electrostatic |
| Ear coupling | circumaural |
| Contact pressure | 4.6 N |
| THD at SPL of 110 dB (94 dB) | < 0.1 % (< 0.01 %) |
| Nominal sensitivity (V = 100 V) | ≥ 98 dB/1 kHz |
| Polarisation voltage | 500 V |
| Weight (without cable) | 365 g |
| Connector | 5-pin HV plug |
| Connection cable | 3 m, 6-core OFC copper cable, gold-plated contacts |
| Dimensions | 19 x 10 x 21.5 cm |
|
Specifications for the Sennheiser Orpheus HEV-90 Amplifier |
|
| Frequency response | 10 - 20,000 Hz (- 0.25 dB) |
| THD (1 kHz) | < 0.01 % |
| Unweighted S/N ratio | ≥ 80 dB |
| Sensitivity/impedance | 10 kΩ |
| Technical Data | Amplifier |
| Talk-over muting | (1 kHz) ≥ 80 dB |
| Output voltage | 400 Veff |
| Line inputs | (switchable) optical, digital (Toslink) co-axial, digital (RCA phono) (automatic recognition of incoming sampling frequency) co-axial, analogue (RCA phono) |
| Outputs | for 2 HE 90 headphones |
| Weight approx. | 13 kg |
| Dimensions | 53 x 34 x 15.5 cm |
