Three amplifiers symbolize the success of Unison Research: the Simply Two, the Triode 20 and the legendary Absolute. On the occasion of the 25th anniversary of the birth of Unison Research, we pay homage to these historic devices by offering the Simply Two and the Absolute in a limited and numbered “Anniversary” edition. We’ve also decided to offer a completely new version of the Triode 20 and named it, quite appropriately, the Triode 25.

• Output Stage: Push-pull, ultralinear, Class-AB
• Output Power: Approx. 45 watt per channel
• Pentode configuration
• Approx. 25 watt per channel
• Triode configuration
• Output Impedance: 6 Ohm
• Input Impedance: 47 kOhm / 50 pF
• Negative feedback: 5 dB or 1.8 dB
• Valve complement: 2 x ECC83 (12AX7) 1 x ECC82 (12AU7) 4 x EL34 (6CA7)
• Power Consumption: 300 watt max
• Fuses: T6.3A from 100V to 130V T3.15A from 220V to 250V