[willing to trade for other items with the same value] USED** but very well kept!! This amp has powered some of the best parties and events I have hosted. The price is a steal for this product. If you are familiar with audio equipment then you know how reliable this amp is. You're working on a budget, but you still want a professional amplifier that offers advanced construction and reliability. QSC's GX Series amplifiers feature advanced protection circuitry that keeps things running smoothly, and their multiple signal routing options make it easy to adapt the amp to any job at hand. And these lightweight amps won't weigh down your rack, so life at the end of a show is just a little bit easier. ••• The 2-channel GX3 amplifier delivers 300 watts per channel to an 8-ohm load, and up to 425 watts per channel with a 4-ohm load. If you're powering a sub, the GX3's crossover switch allows you to use channel 1 to power your sub and channel 2 to power your full-range speaker. You'll find two gain controls on the front panel, along with red clip LEDs, green signal LEDs, and blue power LEDs