Description of RPA16: Rockville RPA16 10, 000 Watt Peak 2 Channel Professional/DJ Rack Mount Amplifier, LCD displays volume in dB per channel and operating temperature, 2U rack space, Built in limiter protects your speakers from distortion and clipping, Bridged mode allows you to combine both channels power into one channel for use with a subwoofer, Stereo mode is perfect for (2) speakers or (4) speakers in a left and right configuration. Parallel mode gives you dual mono output signal which is perfect for monitor use when you want all sounds coming out of each speaker instead of a left/right configuration, Built in crossover switch (bypass, 80 Hz, 160 Hz) allows amp to be used with full range PA speakers, or Subwoofer(s), Channel A & B Clipping Led Indicators, Channel A & B Separate Level Controls, Power, signal, clipping, and protection LED indicators on front of amp, Heavy duty rack mount ears with handles. Built-in variable high velocity quiet cooling fans, Maximum headroom for 4-ohm and 8-ohm Speakers, Level controls for precise setting and matching of sensitivity, Computer controlled IC protection circuitry against speaker short circuit, thermal over load, DC over load, User serviceable fuse (25A, 250V), Frequency Response (bandwidth @ 2Vrms out, @ -3. 0dB) 10 Hz – 30 Khz, THD + Noise @ 1Khz full power: Input sensitivity: 0. 7v, Damping factor: ( 100Hz, 10w, 4 ohms): 36. 5, Damping factor: (1Khz @ 8 ohm): >400: 1, Effective damping factor (100Hz, 10w, 4 Ohms) 1. 08, Output impedance at speaker terminals: 0. 10975 Ohms, Frequency Response vs THD+N (worst case, across normal bandwidth 1W) 0. 6%, Signal to Noise Ratio: > 100dB, IMD 60Hz & 1kHz, 4: 1: Terminals: Input Terminals: Combo jack (XLR and ¼”) A & B inputs. Output Terminals: Banana binding post speaker output, Speak on output, XLR output to connect another amplifier or powered sub.