Unico primo is a hybrid integrated stereo amplifier capable of delivering 85W RMS
Continuous on an 8ohm load with both the channels driven (as usual for Unison Research declared
Power will be lower in order to keep our promises in every condition); with impulsive and non
Correlated signals (i.e. a real musical signal) the maximum power will be even higher.
Thoughts arisen some time ago, during the design of Reference power amplifier, induced the
Unison Research technical staff to deeply investigate the sonic performances of ECC83/12AX7
Double triode in particular configurations. These investigations led the designer to the idea of using
This kind of triode in Unico line instead of ECC82/12AU7.
So we started a series of experiments on the on-production products, taking the best of our long
time experience and of the result of or tests.
Unico primo shares with UnicoP a design based on a single double triode, however in the new born
amplifier the input and preamplifier stage has been tailor suited on a ECC83/12AX7 tube (whose
characteristics are quite different from ECC82’s ones).
Power supply has been revised increasing power transformer and filter capacitors in order to
Improved dynamics, bass response, driving capability.
Just to make this little amp (it represents the entry level piece of Unico series) a well equipped
fighter against his competitors the design includes a low impedance active stereo output dedicated to
an active subwoofer or any other line-level input and the option to convert one of the line input to a
phono input thanks to a easy to install RIAA preamplifier board.
The aesthetical line featuring black hairlined aluminium chassis give’s the Unico primo a smart look, nicely finishing of the surface and perfect proportions typical of an Italian style design.
The aluminium chassis ensures high rigidity too with improved sonic performances and spurious
vibrations dumping thanks to the three point suspension.
Unison Research technical staff has put all its efforts in this project with the ambitious aim of
putting in a little amplifier all the knowledge, all the technology and all the passion they instill in the
top level award winning devices.
Output power: 85W RMS on 8
Frequency response: -0.1dB @ 10Hz, – 0.5dB @ 100kHz
Input stage: Pure A Class Tube stage (1 x ECC83/12AX7)
Output stage: Dynamic A Class POWER MOSFET complementary pair
Inputs: 5 line unbalanced (1 phono optional)
Line Outputs: 1 tape, 1 sub (volume controlled)
Outputs connectors: 4 + 4 bi-wiring
Power consumption: 340W max
Dimensions: 43.5cm x 9.5cm x 43cm