Product Code: SH

Unison Research SH Headphone Amplifier sale

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Unison Research SH Headphone Amplifier

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.


USB DAC SPECIFICATION

  • 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)


TECHNICAL SPECIFICATIONS

  • Maximum output voltage (THD 1%) : output “High sensibility” 0.5 V/150 ohm, 0.45 V/33 ohm, 0.4 V/10 ohm output “Low sensibility” 1.5 V/150 ohm, 1.2 V/33 ohm, 0.65 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
  • Dimension: 22,5 cm x 12,6 cm x 32,2 cm
  • Weight: 6 kg

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