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