The Primo is a stereo integrated amplifier that offers elegant lines and details, thanks to carefully considered surface finishes and proportions. Solid construction, careful selection of components and precise assembly are part of an almost artisan approach to amplifier design, reflecting our origins in Treviso. Unison Reasearch has concentrated all of our experience, knowledge and ambition into a small amplifier—one that includes all the technology and passion that one usually finds in the finest flagship products.

  • Output power: >80W RMS on 8Ω
  • Output stage: Dynamic A Class POWER MOSFET complementary pair
  • Polarization: Classe A Dinamic
  • Input stage: Triodi A-Class A
  • Valve: 1 x ECC83 (12AX7)
  • Sensibilty: 260mV
  • Input impedance: 50 kΩ / 47 pF
  • Frequency response: -0.1dB@10Hz / -0.5dB@100kHz
  • SNR: 90dB
  • THD: 0.15% @ 10W, 1kHz
  • Negative feedback: 10dB
  • Damping Factor: >50
  • Inputs: 5 line RCA, 1 tape RCA
  • Output: 1 tape RCA, 1 subwoofer RCA
  • Output connectors: 4 +4 per Bi-Wiring
  • Remote control: Volume, IR
  • Power consumption: 380W max
  • Dimensions (la x lu x alt): 43.5 x 43 x 9.5 cm
  • Net weight: 14 kg

The Primo wowed me with its ability to ally impact with resolution, and visceral dynamics with graceful detail and musicality. That it failed to resolve the deepest low-end notes with equal gumption in no way detracted from its overall appeal. Rather, the Primo delighted with its cohesive strengths, and so achieved a kind of holistic presence.