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Unison Research SH Headphone Amplifier

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From £1,400.00 (FREE UK Delivery)
Item out of Stock  |  Usually dispatched within 24 hours
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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.

Key Features:

  • Compatible with large selection of headphones
  • ECC83 Valve used on input stage and EL84 on output stage
  • Asynchronous USB interface compliant to USB 2.0 Audio Class
  • Resolution up to 32bits/384kHz
  • Last generation ESS Sabre DAC with jitter eliminator circuit
  • Galvanic isolation between USB interface and conversion circuit
  • Connect iPad/iPod/iPhone directly via Lightning to USB cable (not included)
  • Low phase noise clocks which reside in the “clean” supply domain to preserve low jitter performance

Technical Specification:

  • Max. Output Power (THD 1%), High Sensitvity: 0.5V (150Ω), 0.45V (33Ω), 0.4V (10Ω)
  • Max. Output Power (THD 1%), Low Sensitvity: 1.4V (150Ω), 1.1V (33Ω), 0.6V (10Ω)
  • Frequency Response: -0.1dB @ 10Hz / 3-dB @ 50kHz (Low Sensitvity Output with 33Ω Load)
  • Input Impedance: 20 kohm // 100 pF Sensitvity 0.67 V / High Sensitvity, (10Ω Load) 0.33V Out / Low Sensitvity, (33Ω Load) 1V Out 
  • Input Stage: Pure Class A, ECC83/12AX7 
  • Output Stage: Class A, EL84 (Triode Mode) 
  • Inputs: 1 x RCA Line Level / 1 x USB (Type-B) 
  • Output: 2 x ¼" Jack Sockets (in parallel) 
  • Feedback: 16dB 
  • Output Impedance: 6.9Ω
  • Total Harmonic Distortion: < 0.2% @ 1kHz 0.5V / < 0.8% to 1 V
  • Power Consumption: 45W
  • Dimensions (W x D x H): 22.5 x 12.6 x 32.2cm
  • Weight: 6kg

We endeavour to despatch same day for orders placed up to 2pm on available stock items (items with stock message "Usually dispatched within 24 hours"). Please remember to check with us first for a physical stock check if next day delivery is important to you. Any items with stock message "Usually dispatched within 72 hours" are items that we do not hold in stock but order in from the importer or manufacturer as soon as a customer order is recieved. Occasionally these may be delayed beyond 72 hours due to importer/manufacturer stock levels but we will inform you as soon as we can if this is the case.

UK ORDERS:  We despatch the bulk of our UK mainland items on a 24 hour service – Free of Charge.  Non Mainland locations - Isle of Man, Isle of Wight, the Scilly Isles, the Scottish highlands and Islands, the Channel Islands and Northern Ireland may take a day or so longer and are not Free of Charge. Smaller items are delivered using Royal Mail recorded delivery or special delivery. Larger items are delivered using a courier service such as Interlink Express, DPD, UPS or DHL. 

INTERNATIONAL ORDERS: We offer competitive rates which can be confirmed by email. Please just ask – we will need a full delivery address and telephone number. Smaller items are delivered using Royal Mail Small Packets Airmail with International Tracked and/or Signed depending on value of item and availability of the service. Larger International shipments are sent by insured and tracked services using DPD, DHL or UPS. If there are any delays due to specific customs regulations, etc, you will be contacted by Turntableworld or by the courier with a request for any further information required. Customs duties do not apply for shipments into any EU country (for a full list please refer to the EU Country List). Customs duties can apply for countries outside of the EU. Customers in these countries are responsible for all taxes and duties incurred when the items enter their country.

COLLECT IN STORE OR HOME INSTALL:At the request of the manufacturer some items cannot be supplied by mail order but you can click and buy them and then elect to collect them from our store or arrange a home install (if applicable). Applicable items clearly state that they are Collect in store or home install. Once ordered you will receive a message prompting you to contact us by phone or email to arrange for us to deliver and install or to reserve and collect from our store at your convenience, you will also be advised of the delivery time / stock availability as not all Home install / collect in store items are held in stock. 

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