VK60

Balanced Audio Technology VK-60 power amplifier, stereo configuration: 
Power output: 55W minimum (17.4dBW, 8 ohms), 65W typical (18.1dBW, 8 ohms) (8 or 4 ohm load, <3% THD).
Power bandwidth: <7Hz-100kHz.
Input impedance: 200k ohms (each phase).
Output impedance: 2.5 ohms (high-impedance taps), 1.4 ohms (low-impedance taps).
Gain: 28dB, balanced or unbalanced.
Tube complement: four 6C33C-Bs, six 6H8Cs.
Power consumption: 500W maximum (idling).
Dimensions: 17" W by 24" D by 8" H. Weight: 85 lbs.