Unison Research Phono One

Brand: Unison Research


The Phono One was originally released many years ago and enjoyed much admiration and acclaim during its life-span. After it was discontinued it's popularity did not cease, so when the vinyl hi-fi market began to experience a resurgence, Unison Research decided to re-introduce their iconic phono stage with new and improved specifications. 

The Phono One is aesthetically similar to the original, and while it shares some similarities in circuitry with the Simply Phono it earns its place as Unison Research's flagship phono stage in part because of the 10 triodes it uses 5 x ECC83 (12AX7) valves. 

All of the gain stages now implement a parallel configuration for the best low-noise and low-distortion performance. This solution also increases the overall cartridge gain ability to approximately 54dB; easily enough for a wide variety of Moving Magnet (MM) and Moving Coil (MC) cartridges. The same passive RIAA network as found in the original Phono One has been adopted, but with specially selected components that ensure strict tolerances to the equalization curve.

Particular care has been dedicated to the power supply design in order to minimise cross-talk and inter-stage interference. Combine this with the elastic suspension of the amplifier board and optimised circuitry throughout, and the result is a superlative sonic performance, full of natural detail and musical clarity.


Analogue Inputs:

               1 x RCA (Pair With Ground)

Digital Inputs:

               N / A

Analogue Outputs:

               1 x RCA (Pair)

Digital Outputs:

               N / A

Moving Magnet:

               Yes

Moving Coil:

               Yes

Input Impedance:

               22 / 50 / 100 or 47kΩ (switchable)

               100 / 200 / 320 or 420pF (switchable)

Dimensions (W x H x D):

               373 x 58.4 x 246mm

Weight:

               3.5kg

Valves:

               5 x ECC83


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