Unison Research Sinfonia Valve Integrated Amplifier

Unison Research Sinfonia Valve Integrated Amplifier

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Unison Research Sinfonia Valve Integrated Amplifier

With last years launch of the Performance, Unison Research re-confirmed its position as one of the finest designers of single-ended valve amplification. The new Sinfonia integrated amplifier takes the beautiful design ethic and parallel single-ended technology of the Performance and reduces it in both size and cost to result in a gem of an amplifier. Handmade in Italy and featuring gorgeous solid wood and stainless steel build and 30 watts per channel from two pairs of KT88 power valves, it is a prime example of the amazing value for money products that Unison has produced throughout the years and is sure be a success with audiophiles everywhere.

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 Dual-Mono Stereo
Integrated Valve Amplifier 
 Output Stage Single-Ended Parallel
Ultra-Linear Class A 
 Output Power 25W 
 Inputs 4 x Line
1 x Tape 
 Input Impedance 47kΩ
Outputs  1 x Tape
1 x Subwoofer
Loudspeakers (bi-wiring) 
 Output Impedance 4 - 8Ω
 Feedback Factor 14dB 
Frequency Response  20 - 30,000Hz 
Valves  4 x 6550 / KT88
2 x ECC82
2 x ECC83 
Remote Control  IR control of inputs and volume 
Power Consumption 500W (max.)
Dimensions in cm (W x D x H) 44 x 42 x 21
Net Weight 55lbs

Providing your item is in stock, the order is usually dispatched within 24 hours. Please remember that postage and packing is completely free for orders over £50*. 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.

Deliveries usually take 1-3 working days. The majority of orders are sent via our couriers'; Interlink Express on a next-day-delivery service. Smaller, low value or light-weight items are normally posted using Royal Mail Recorded or Royal Mail Special Delivery.

Once your product has been dispatched, you will be notified via email and sent a unique consignment number, you can use this number at to check the status of your delivery. If you have provided a mobile telephone number, Interlink's Predict service will notify you by text (and email) of a one-hour delivery window. If the window they suggest is inconvenient, you can change the date of delivery to a later one via text or email.

*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.

Shipping CostsMainland UK (Next-Day)Offshore/Out-of-reach (2-day)Northern Ireland, Channel Islands, Isle of Man, Scottish Islands, Scilly IslandsRepublic of Ireland (2-day)
Under £50 Orders £7.50 £12.50 £15.00
Over £50 Orders FREE £19.99 £29.99
Surcharge Orders £50.00 £69.99 £79.99
Saturday Delivery £12.99 N/A N/A
Sunday Delivery £12.99 N/A N/A


Post codes exempt from the free delivery service include:

Scottish Highlands Post Codes: AB30-38, AB41-42, AB44-56, FK17-99, G83, IV1-28, IV30-39, IV52-54, IV63, KW1-14, PA21-33, PA34-40, PH15-26, PH31-41, PH49-50
Islands Post Codes: HS1-9, IV40-51, IV55-56, KA27-28, KW15-17, PA20, PA41-49, PA60-78, PH42-44, ZE1-3
Northern Ireland: All BT postcodes
Channel Islands Post Codes: JE, GY
Scilly Isles Post Codes: TR21, TR22, TR23, TR24, TR25

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