Frequency response SFR: 10Hz-40KHz +/- 1dB

Total harmonic distortion THD:> 0.005%

Signal to noise ratio S / N: 95dB

Gain: ≈0dB

Brand new

input voltage: AC 0--12V/1000mA

Reference tube model: 6N3 or 5670

Size:113mm*65mm*63mm