QSC GX5 Stereo Power Amplifier $299.00 Used in excellent condition / 500w amp / Signal to Noise (20 Hz - 20 kHz):100 dB / Inputs: 1/4" - XLR - RCA / Speakon and Banana Jack Outputs / Crossover Switch (100Hz) / Optimized for headroom into 4 Ohm and 8 Ohm speaker systems