Unison Research · Integrated Amplifiers
Triode 25 Black Edition
Triode 25 Black Edition is a KT77 valve amplifier with selectable triode or pentode operation and three digital inputs.
fig. 01 · integrated amplifiers
Triode 25 Black Edition
Triode 25 black edition
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From Unison Research
Triode 25 Black Edition builds on the Triode 25 platform with revised signal-path and power-management circuits. Its KT77 output valves can run in triode or pentode mode, while USB, S/PDIF, and Toslink inputs sit alongside line connections and a subwoofer output.
Specifications
| Output stage | Push-pull, ultralinear, Class-AB |
|---|---|
| Output power | 50W pentode mode 30W triode mode |
| Signal valves | 2 x ECC83 Gold Lion and 1x ECC82 Gold Lion |
| Output power valves | 4 x KT77 Gold Lion in push pull configuration |
| Working mode | Triode or Ultralinear with tap at 60% (power valves) |
| Inputs | 3 line RCA, 1 USB, 1 SPDIF, 1 Toslink |
| Outputs | 1 subwoofer RCA (stereo), 1 line out |
| Feedback | 10dB to 12dB selectable |
| Bandwidth (-1dB) | 10Hz - 50kHz |
| Dimensions | 30 x 45 x 20 cm - 12 x 18 x 8 inch |
| Weight | 20kg |
| Product type | valve integrated amplifier |