Revox - A78 MKII Solid state integrated amplifier

Output power: 40 watts per channel into 8Ω (stereo)
Frequency response: From 20Hz to 20kHz
Total harmonic distortion: 0.1%
Damping factor: 20
Input sensitivity: 2.7 mV (microphone), 2.7 mV (MM), 230 mV (ceramic), 100 mV (line)
Signal-to-noise ratio: 65 dB (MM), 75 dB (line)
Output: 155 mV (line)
Speaker load impedance: From 4Ω to 16Ω. Device bought by mistake from a professional seller. Powered on and functioning.