Triode 25

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  • Regular price $5,935.00


The new amplifier is the result of a long and careful design, experimentation and optimization work, despite the important experience already gained in the realization of its predecessor. Three amplifiers can be considered the symbol of the success of Unison Research: Simply Two, Triode 20 and Absolute. On the anniversary of the 25th anniversary of the birth of Unison Research, these three historic devices have been re-proposed: The Simply Two and the Absolute with the limited and numbered series "Anniversary", and the Triode 20 with the new and more important version "Triode 25 ″, The first Unison Research amplifier to feature an internal DAC with USB input.


  • Output stage: Push-pull, ultralinear, Class-AB
  • Output Power: Approximately 45 watts per channel in 
    Pentode configuration. 
    Approximately 25 watts per channel in 
    the Triode configuration.
  • Output impedance: 6 ohms
  • Inputs: 4 line, 1 tape
  • Input impedances: 47 Kohm / 50 pF
  • Negative feedback: 5 dB or 1.8 dB
  • Valves: 1 x ECC82 (12AU7) 
    2 x ECC83 (12AX7) 
    4 x EL34 (6CA7)
  • Power consumption: 300 Watts max
  • Fuses: T 6.3A for voltages from 100V to 130V 
    T 3.15A for voltages from 220V to 250V
  • Dimensions: 30 cm x 45 cm x H. 20 cm
  • Weight: 20Kg