Unison Research Triode 25 Tube Amplifier

The Triode mode offers 25 watts per channel for a more refined, intimate sound, while the Pentode mode increases power to 45 watts per channel for greater punch and dynamics. You can easily switch between these modes to match your specific speakers or listening preferences.

Yes, the Triode 25 is designed with tube longevity in mind, and the EL34 tubes are standard components that are widely available. Replacing them is a straightforward process, though we recommend following the manual's guidance on biasing to ensure optimal performance.

The amplifier features a 6-ohm output impedance, which makes it compatible with a wide range of bookshelf and floorstanding speakers. Given its 45-watt output in Pentode mode, it performs best with speakers of average to high sensitivity.

The unit measures 30 cm by 45 cm with a height of 20 cm and weighs 20 kg. Because it is a tube amplifier, it is important to place it on a sturdy surface with adequate ventilation space above and around the chassis to allow heat to dissipate properly.

No, the Triode 25 is an integrated amplifier, meaning it combines both the pre-amplification and power amplification stages in one chassis. You can connect your source components, such as a CD player or DAC, directly to the RCA inputs on the back.

The push-pull design is engineered to minimize distortion while maintaining the warmth and harmonic richness associated with tube amplification. It provides a balanced, detailed sound that avoids the harshness sometimes found in solid-state designs.