Unison Research UNICO PRIMO
Image source — © Unison Research
Model name
UNICO PRIMO
Type
Integrated Amplifier with Phono
Analog inputs (balanced)
N/A
Analog inputs (single-ended)
4 + 1 (Phono)
Input sensitivity (mV)
260
Input impedance (balanced) (Ω)
N/A
Input impedance (single-ended) (Ω)
50 000
Output impedance (balanced) (Ω)
N/A
Output impedance (single-ended) (Ω)
N/A
D/A conversion
N/A
Phono MM/MC current-sensing input impedance (Ω)
47 000 (MM) + 100 (MC)
Output power (8Ω) (W)
80
Output power (4Ω) (W)
N/A
Gain (dBu)
N/A
Frequency response low +/- 3dB (Hz)
10
Frequency response high +/- 3dB (Hz)
100 000
Signal to Noise Ratio (dB)
N/A
Total Harmonic Distortion + Noise (%)
N/A
Damping factor
>50
Dimensions (mm)
435 x 430 x 95
Weight (kg)
14
Official link
The Unico 150 has a two-stage tube preamp on ECC83 and 6H30 triodes operating in Class A, and output stages on custom-made complementary field-effect transistors (four pairs per channel) operating in A/B mode.
The Unison Research Unico 90 is a hybrid integrated AB class amplifier with zero feedback. The heart of the Unico 90 is in its hybrid scheme. The tube character of the amplifier is determined by the tube stage assembled on the ECC83 and ECC81, in particular, with several parallel totem poles.
The Unico Due integrated amplifier has replaced the proven Unico Secondo, but differs from it very significantly. The changes affected almost all elements of the scheme. In the pre-amp section of the hybrid device, two ECC83 dual triodes operate, selected based on the results of long listening sessions. The power amplifier is built on MOSFET transistors and outputs up to 100 watts at 8 ohms.
This is a hybrid integrated amplifier, which is an evolution of a popular European brand. Among the innovations: AC connection by buy-waring, MM/MS phono corrector with passive RIAA circuits on HF (audiophile solution). All amplifier circuits are optimized by repeated listening.
According to the manufacturer, the Unison Research Triode 25 Black Edition has an optimized amplifier circuit - both in the signal path and in the power supply.