The Avant 118A incorporates a 1250 W Class D amplifier with switch mode power supply (SMPS) and digital signal processing (DSP).The amplifier has a unique EQ switch which allows the user to select a Deep subbass response or a Loud bass response. The system includes two balanced inputs with stereo filtered output connections for satellite systems. The variable crossover ranges from 100 Hz-160 Hz and can be defeated to offer stereo “loop thru” connections. A gain control and polarity reverse feature increase user control over the system.