Radio Design Labs RU-ADA4D Audio Distribution Amplifier

Amplifier Specifications: Inputs (2): Stereo (A/left and B/right) on detachable terminal block Input Impedance: 20 k Ohm balanced or 10 k Ohm unbalanced Input Level: +4 dBu balanced (nominal) +25 dBu maximum; -10 dBV unbalanced Input Gain Adjustments (2): -5 dB to +15 dB (rel. +4 dBu balanced); -3 dB to +17 dB (rel. -10 dBV unbalanced) Input Metering (2): Dual-LED VU Meter for Input A and Input B Mono mode: Rear-panel switch-selectable (input A feeds all 8 outputs) Outputs (8): Stereo A (4) B (4) on detachable terminal blocks Output Impedance: 150 Ohm balanced; 75 Ohm unbalanced Output Level: +4 dBu balanced (nominal) +24 dBu maximum; -10 dBV unbalanced Output Level Adjustments (8): -9 dB to +6 dB (rel. +4 dBu balanced); -3 dB to + 12 dBu (rel. -10 dBV unbalanced) Frequency Response: 10 Hz to 165 kHz (+/- 0.25 dB); 10 Hz to 35 kHz (+/- 0.01 dB) THD+N: < 0.0025% (20 Hz to 20 kHz) 20 dB (above +4 dBu input or output) Noise: < -92 dB (below +4 dBu output 20 Hz to 20 kHz) Crosstalk: < -90 dB (20 Hz to 5 k