Unison Research Sinfonia Anniversary

Description

The Unison Research Sinfonia Anniversary is a premium 25W (sometimes listed as 45W depending on configuration) class-A, dual-mono tube integrated amplifier. Upgrading the standard model, this special edition features superior Genalex Gold Lion tubes, upgraded components for lower noise, and a distinctive bronze top plate. It is highly regarded for a romantic, detailed sound, exceptional, and luxurious build quality that shines with jazz, vocal, and classical music.
It offers a “sweet,” “warm,” and “refined” sound, described as highly musical with a large soundstage.
The Anniversary version includes Gold Lion valves known for superior linearity and reduced noise compared to the standard model.
The Sinfonia Anniversary is viewed as a “hidden gem” and excellent value for those seeking a luxurious and musical tube experience.
  • Type: Dual mono Stereo Integrated Valve Amplifier
  • Output Stage: single ended parallel ultraliner class A
  • Output Power: 29W
  • Inputs: 4 line, 1 tape/monitor
  • Input Impedance: 47 kOhm
  • Outputs: 1 tape, 1 subwoofer RCA stereo
  • Output Impedance: 4 – 8 ohm
  • Feedback factor: 14dB
  • Bandwidth (-1dB): 20 – 80000 Hz
  • Valves: 4 x KT88, 2 x ECC82, 2 x ECC83 Gold Lion
  • Remote Control: IR inputs and volume
  • Power Consumption: 500W max