Unison Research S9 Integrated Amplifier

Unison Research S9 Integrated Amplifier

Free UK Delivery



Unison Research S9 Integrated Amplifier

This S9 represents an important advance in the development of the modern all-tube integrated amplifier. Using for the first time the new SV-572 power valve, it offers superb musical performance across the full audio spectrum. When partnered with loudspeakers of suitable quality it will provide a convincing listening experience to satisfy the most demanding audiophile or music lover.

Who is Unison Research?

Unison Research, founded in 1987 by a group of audiophile technicians, is a prestigious Italian manufacturer of valve-based premium high fidelity audio components. Specialising in the design and construction of amplifiers, CD players, headphone amps and phono stages that boast not only impeccable, effortlessly rich sound but also an artistic visual design. 

 Type Stereo Integrated Valve
 Output Stage Single-Ended Parallel A Class 
Output Power (per-channel)  30 W 
Output Impedance  6Ω 
Input Impedance  47kΩ / 50pF 
 Feedback Factor 14dB 
 Frequency Response 20Hz - 50kHz 
 Valves 4 x SV572-10, 
4 x ECC82 
Power Consumption   700W max
  Inputs 4 x Line 
  Outputs 1 x Tape
Dimensions (W x H x D) 40.89 x 56.89 x 25.15cm
Net Weight 49.90kg

Providing your item is in stock, the order is usually dispatched within 24 hours. Postage and packing is completely free for orders over £100*. Out of stock items will be dispatched as soon as they become available, out of stock items can take between 4 to 21 days for dispatch.


Orders are sent via our couriers' DPD on a next-day-delivery service and usually, take between 1 and 3 days. 


Please use this link to find more detailed delivery information.


*We ship free of charge to mainland UK addresses, excluding the Scottish Highlands or 'Out-Of-Reach' Scottish locations. Please consult the post-codes below to see if your location falls within this category. If you are still unsure, please contact us on 01432 354921. We also ship to Northern Ireland, Channel Islands, Scilly Isles, Scottish Isles and Scottish Highlands, however, delivery to these locations will incur a charge and can only be sent via a 2-day service.

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