€1,799.00
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Unison SH
Class-A Tube Headphone Amplifier with Digital Input
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Unison Research’s unrivalled ability with Single-Ended valve designs is well known around the world. The SH is the company’s first headphone amplifier to benefit from such extensive knowledge and ability.
The SH uses a Single-Ended Class A design with only two stages and a passive volume control. The classic refinement of the valves combines with modern technology found in the internal USB DAC to produce something truly stunning.
- Asynchronous USB interface compliant to USB 2.0 Audio Class
- Accepts PCM up to 384kHz and DSD up to 128x
- Resolution up to 32 bits
- Last generation ESS Sabre DAC with jitter eliminator circuit
- Galvanic isolation between USB interface and conversion circuit
- Low phase noise clocks which reside in the “clean” supply domain to preserve low jitter performance
- 110dB SNR (@ 1kHz, “A” weighted, 192kHZ) 0.008% THD+N (@ 1kHz, -3dBFS)
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Heinrich Deinzer
| Model | Unison Research SH |
| Maximum output voltage (THD 1%): | output "High sensibility" 0.5 V/150 ohm, 0.45 V/33 ohm, 0.4 V/10 ohm |
| Frequency Response: | -0.1 dB @ 10Hz / 3-dB @ 50 kHz (output "Low sensibility", 33 ohm load) |
| Input impedance: | 20 kohm // 100 pF |
| Sensibility: | 0.67 V in/ 0.33 V out (output "High sensibility", 10 ohm load) 0.67 V in / 1 V out (output "Low sensibility",33 ohm load) |
| Input stage: | Pure Class A, ECC83/12AX7 |
| Output stage: | Class A, 2 EL84 triode connected |
| Inputs: | 1 line RCA, 1 USB |
| Outputs: | 2 (parallel connected) |
| Feedback factor: | 16 dB |
| THD: | < 0.2% @ 1kHz, 0.5V, <0.8% up to 1 V (output "Low sens.", 33 ohm load) |
| Absorption: | 45 W |
| Dimensions (H x W x D): | 126 x 225 x 322 mm |
| Weight: | 6 kg |
