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Unison Research SH Headphone Amp / DAC. NEW!

Unison Research SH Headphone Amp / DAC. NEW!

1,199.99 USD

  • Price 1,199.99 USD
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Up for sale is a Brand New Unison Research SH Headphone Amp / DAC


Headphone Amp / DAC


120V 50/60Hz



No. of Owners:


Tobacco/Pet Free:

Repair History:

Included are:
SH Headphone Amp / DAC
Power Cord
1/4” to 1/8” adapter
Original Packaging

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.

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)
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)
Dimension: 22,5 cm x 12,6 cm x 32,2 cm
Weight: 6 kg

Wired: ’One for hardcore tube purists, but with a twist: although the Unison Research SH is a Single-Ended Class A all-valve design, it has a USB input for a feed from digital sources. This is asynchronous, compliant to USB 2.0 Audio Class, and accepts PCM up to 384kHz and DSD up to 128x. That said, the SH is minimalist and can drive two sets of headphones. Tech spec aside, the sound is pleasingly warm and "analogue-y".’

MSRP $1699 (current prices in UK and Canada are $1850-$2000), I am asking $1199.99.

Take advantage of No Payments and 0% Interest for 6 Months with PayPal Credit.

Please check out my other audio gear bargains!

Shipping inside the USA is calculated exact by USPS or FedEx from zip 32832.
International Shipping is calculated exact by USPS Priority Mail.
Shipping weight is 15 lbs and the box measures 19x13x9.

I accept Paypal, Credit Cards, Zelle, Cashier's Checks or Money Orders.
When Cashier's Checks or Money Orders are used, the item will ship once the C.C. or M.O. clears.
Please add 3% to the total when PayPal/Credit/Express Checkout card payment is used.

International Shipping:
When I ship International I am not responsible for any loss/damage during shipping and any Customs duties/fees/charges/taxes.
Please check with your local customs office for import rules and regulations.

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