Technical Indicators Audio Output Signal:Balance 4 (±0.5dB) Signal 2V(±0.5dB)Frequency Response:10Hz-35kH(±0.5dB) SNR:≥110dB(A) Distortion:≤0.005% Dynamic Range:≥117dB Anlog Output:balance one group,unbalancone group Digital Output:coaxial one group Tube:6H8C×2 6Z4P×2(Rectifier tube)