The BasX A3 is a three channel power amplifier that delivers 140 watts / channel into 8 Ohms and 200 watts / channel into 4 Ohms all channels driven with a rated THD+N of < 0.02% and an A-weighted S/N ratio of 112 dB. The BasX A3 features a heavy-duty linear power supply high-quality Class A/B amplification transparent fault protection and a trigger input and output. High quality industry standard unbalanced RCA inputs enable the BasX A3 to be used with almost any preamp or processor and audiophile grade five way speaker terminals accept banana plugs spade lugs or bare wire. These features combine to enable the BasX A3 to deliver true audiophile performance and sound quality at an amazingly affordable price. The BasX A3 is the ideal choice to power a 3.1 channel system to upgrade the front three channels of a surround sound receiver or for anywhere where three channels of great sounding clean power are needed