Unison Research
Unison Research Phono One Phonostage
Power Supply
Unison Research Phono One Phonostage
Cherry / with Power Supply
22 Saint Kilda Road
22 Saint Kilda Road
Suite 2.02
St Kilda VIC 3182
Australia
Country of origin: Italy
uPhono+
MM / MC Phono Pre-amplifier w/Volume Control, Headphone Amplifier & Analog to Digital Converter with Digital Outputs. A veritable Swiss knife of functionality. Features two on-board linear power supplies; one powering the analog section and one powering the digital section. No external wall-wart power supply here.uPhono+ Analogue Features
- Moving Magnet (MM) stage gain: 38dB @ 1kHz
- Moving Coil (MC) stage gain 58dB or 69dB @ 1kHz selectable with dip-switches
- MM cartridge input with 4 loading capacitor values (100/200/320/420pF) selectable with dip-switches
- MC cartridge input with 7 loading resistor values (5/10/25/100/250/500/1kOhm) selectable with dipswitches
- Fixed level analogue output
- Variable level analogue output: level varied with front panel volume control
- High-current headphone stage: can be used with headphones from 16 to 600 ohms impedance
- Subsonic IEC anti-rumble filter with override dip-switch
- Optimized PCB layout and widespread use of SMD componentry to minimize the length of the signal path
- Alps® «Blue Velvet» potentiometer that simultaneously adjusts the volume of the headphone stage and the level of the variable output
- Low noise internal mains power supply with totally independent analogue and digital power supplies
uPhono+ Digital Features
- USB 24bit/96kHz max. sample rate to record your vinyl discs on PC and save them in
high-resolution formats - Toslink (96kHz) digital optical output
- S/PDIF (96kHz) digital coaxial output
- A/D conversion carried out using the Cirrus Logic CS5341 IC
- USB asynchronous transmission using the Bravo SA9137 IC
- Digital optical and coaxial transmission using the TI DIT4096 IC
Type |
Stereo phono tube preamplifier |
Class |
Pure A |
RIAA |
passive +/- 0.1 dB (20 Hz / 20 KHz) |
Output Impedance: |
800 ohms |
Outputs: |
1 x line |
Gain: |
54dB |
Total harmonic distortion (THD) |
0.1% for 1 volt output |
Signal to Noise Ratio (S/N) |
–80 dB |
Inputs |
1 for MM or MC phono valve |
Input impedance |
47 Kohm – 100 – 50 – 22 ohm / 100 – 200 – 320 – 420 pF (modifiable) |
Feedback factor |
0 dB. |
Valves |
5 x ECC83 / 12AX7 |
Power supply |
External |
Dimensions |
37.3 x 5.84 xh 24.63 cm. |
Weight |
Approximately 3.6 kg (including external power supply) |