Input Impedance:20 kΩ Balanced or Unbalanced BridgingInput Level:-10 dBV minimum for 2 Watts RMS outputOutput Impedance:8 Ω (will drive 4 Ω loads)Output Power:1.75 Watts RMS Continuous; 2 Watts RMS max.THD+N:< 0.5%Bandwidth:45 Hz to 14 kHzCMRR: 60 dB (50 Hz to 120 Hz)Residual Noise:< -80 dB (below 2 Watts RMS)Switching Time:< 50 usAttenuation (Muted): 90 dB (1 kHz), 85 dB (300 Hz to 3 kHz) 75 dB (20 Hz to 20 kHz)Selectable Attenuation:3 dB or 6 dB, each setting individually selectable using two independent inputs (connect to ground to activate)Power Requirement:GROUND-REFERENCED, 24 to 33 Vdc @ 200 mA for rated output (220 mA @ 2 Watts RMS)Ambient Operating Environment:0 C to 50 C