Due to the current fluctuations in exchange rates and the impact of the recession on manufacturers, please regard the prices on this page as ‘guide’ only. If you are interested in the equipment you must contact me for a current price.



Unison Research prides itself on creating superb sounding and beautifully made products that are praised by reviewers throughout the globe. Being expert in both single-ended valve and solid state amplification, the Unison Research range stretches from the stunning entry level Unico integrated to the lofty heights of the awesome Absolute 845 . At whatever price, the name Unison Research is synonymous with the best products hi-fi can offer to music lovers.




S6 £2995

Hailed by Hi-Fi World as “easily the best tube amplifier at the price”, the S6 is a Class-A design that uses six EL34 power valves to create 33W per channel in triple-parallel single ended mode. Again, offering superb value for money, the S6 features typical build quality and styling of a classic Unison product and features a sound full of both refinement and authority. The S6 is supplied with a lift-up protective grill and radio frequency volume remote control.

The preamplifier stage consists of two directly coupled triode valves.

The output stage uses three EL 34-type valves for each channel, connected together in triple-parallel configuration and operating in single-ended Class-A ultralinear mode.

The output transformer - in the Unison Research® tradition - has been specially designed and handmade in our own workshops. It allows a very wide frequency response together with the highest possible sound quality.

Outputs are provided to cater for loudspeakers of both 4 and 8 Ohms.

The mains power supply transformer is of generous proportions and will provide all the energy that may be needed by the amplifier under all conditions of use.

During the development stage, great care was taken to design for the absolute minimum number of components in the audio signal path, and thereby allow a close approach to the theoretical ideal of unimpeded signal flow.

Last but not least, all connections to both inputs and outputs are gold plated, which will ensure excellent electrical contact over the lifetime of the product.







S8 £5795

The S8 represents high-end, specialist valve design at an incredibly reasonable price. It uses two legendary 845 valves (one per channel) in its pure triode output stage to create a healthy 24W of pure single-ended power. Sound-wise it has depth, control, transparency and supreme detail along with delicacy. This is a design for those dedicated music lovers who wish to glean the best possible sound along with. value for money. The S8 comes complete with remote control.






Preludio £2595

The Preludio is a small but perfectly formed integrated amplifier featuring one KT88 valve per channel in single-ended mode. Handmade from solid wood and stainless steel, it offers a sound as good as it looks - generous, detailed and sweet. Designed to match a wide range of speakers, when matched with one of similar high quality the results are simply magical!



  • Single-ended integrated, pure Class A
  • Valves 2 x KT88, 2 x ECC82
  • Output Power 14 watts
  • Outputs for speakers 4 & 8ohm, bi-wire
  • Inputs 4 line, 1 tape






Sinfonia £3995

With last year’s 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



  • Parallel single-ended integrated, pure Class A
  • 4 x KT88, 2 x ECC82, 2 x ECC83 valves
  • Output Power 30 watts
  • Outputs for speakers 4 & 8ohm, bi-wire
  • Inputs 4 line, 1 tape
  • Outputs 1 tape, 1 subwoofer (active)







Performance £8495

Throughout the history of Unison research, the company has always demonstrated its mastery of single ended pure valve amplifiers. The spectacular Performance is a beautifully styled design that features three KT88 power tubes per channel – a very unusual configuration. These deliver a sturdy and controlled 40 watts per channel of power. As in only the finest single ended valve amplifiers, bass is extended and fast, the midrange stunning in clarity and the top end smooth and deliciously sweet. The Performance is an amplifier that will satisfy the most demanding customers with style and ease.





  • Valve complement: 6xKT88, 2xECC82, 2xECC83
  • Output stage: Triple-parallel single-ended ultralinear
  • Output Power: 40 Watts/channel
  • Output Impedance: 4 to 8 Ohm
  • Inputs: 4 line, 1 tape







SIMPLY PHONO all-tube phono preamplifier £995

Class A phono stage no feedback / 3 ECC83 (12AX7) valves

Valve phono stages are rare. Affordable models that sound good are even rarer. The Simply Phono is an excellent performer with an affordable price tag.

It’s a perfect compliment to all Unison line level amplifiers and works superbly with any quality hi-fi set-up. It caters for both MM and mid-high level MC cartridges and features switchable impedance for optimum load matching. An optional separate power supply is available for a small extra cost.








ABSOLUTE 845 £30,495

Pure triode integrated amplifier; 40 watts per channel; 6x5814A (ECC82 - 12AU7A) double triode 2xECC83 (12AX7) double triode 4x845 direct heating

Every company has its statement product but none come quite near the Unison Research 845 Absolute integrated amplifier for exhilarating, breathtaking performance and simply stunning style. Weighing some 90kg, the no-compromise Absolute is quite simply a work of art that represents the ultimate in high-fidelity. It was designed to satisfy the requests of the most discerning audiophiles whilst matching the sound with perfect aesthetics. Four 845 valves and numerous exceptional quality components contribute to a sound that's spine-chillingly realistic and awesomely detailed. If you require the ultimate in sound and looks in an amplifier, look no further.










P30K £3195
All-tube stereo/mono power amplifier, 30/60 watts; 2 x twin triode ECC83 4 x KT88

Stereo/Mono Power Amplifier
Unison Research P30K has been designed to satisfy the demands of audiophiles who require high power together with outstanding sonic performance. To achieve his demanding brief, we have chosen to use four KT88 power valves in the output stage - two per channel - configured in pure class-A parallel single-ended mode. This provides 30 watts of power with considerable driving ability and quite exquisite musicality. P30K is in short, a powerful yet refined performer.
Extra versatility
Uniquely for an amplifier of this type, the output may be switched externally to give 6o watts of mono power whilst still maintaining its class-A single-ended mode of operation. And in order to allow perfect matching with all loudspeakers - even those with difficult impedance characteristics - three output taps are provided ranging from 4 Ohms to 16 Ohms for stereo configuration, and from 2 Ohms to 8 Ohms for mono configuration.









C5P PRE £2300 (with phono stage £2650)

C5P is a high - performance pure class-A all-valve preamplifier (3 x double triodes ECC83 / 12AX7 (rectifier). Conceived as the natural partner for Unison Research P3oK Power amplifier, it will also give excellent results with almost all power amplifiers of suitable quality, whether valve or solid state.

Optional Phono Board A highly sophisticated all-valve phono stage is available to cater for vinyl replay. This is based on a pure class-A, passive RIAA circuit using three twin-triode valves and is switchable for optimal matching of both MM and MC cartridges. The phono board is mounted on a compliant rubber suspension to reduce microphone noise.