

Unison Research Phono one
The original Phono One was one of the most popular Unison Research products in our history. Its production was discontinued a few years ago, but the requests to bring it back were overwhelming. That’s why we’ve introduced its return, with a new and improved design. The aesthetics of the Phono One is unchanged, however, maintaining the classic and timeless look of the original version. The Phono One, from its beginning, was designed for those who require a phono preamplifier that offers the highest possible sound quality.

Unison Research Phono one Stereo Phono Valve preamplifier
- Premium valve-based (tube) phono preamplifier for audiophile-grade vinyl playback
- Handcrafted in Italy with meticulous attention to design and component quality
- Compatible with both MM (Moving Magnet) and MC (Moving Coil) cartridges
- Features seven ECC83/12AX7 vacuum tubes for warm, natural sound reproduction
- Low-noise circuit design for exceptional clarity and detail
- Adjustable gain and load settings to fine-tune performance for different cartridges
- Elegant wooden side panels and robust metal chassis for vibration resistance
- Dual mono circuit layout for superior channel separation
- Gold-plated RCA connectors ensure optimal signal transfer
- Ideal match for high-end turntables in hi-fi or stereo systems
pure class Apure A
passive +/- 0.1 dB (20 Hz / 20 KHz)
800 ohm.
1 x line
54 dB
0.1 % @ 1V output
80 dB
1 per fonorivalatore MM o MC High Output (>2mV)
47 Kohm – 100 – 50 – 22 ohm / 100 – 200 – 320 – 420 pF ( modifiable )
0 dB
5 x ECC83 / 12AX7
external
37.3 x 5.84 x h 24.63 cm.
3.6 Kg circa (including power supply)