THD+NRate power,1KHz<0.025%Smpte IMDRate power,60Hz/7kHz—4/1<0.075%Frequency responseRate power,20Hz-20kHz< +/- 0.25dBPhase responseRate power,20Hz-20kHz< +/- 8 Degree Signal to noise ratio1KHz,0.775V input, A weight,>110dBDamping factorRate power,63Hz>1500Controlled slew rate1KHz Tone burst,40dB Gain >100V/usInput..