The Intelix AUD-220 is a 2x20-watt Class D amplifier with an 8-Inch speaker output. The amplifier features two analog audio inputs and a balanced microphone input with ducking functions. Additional features of the AUD-220 include input and microphone volume control, bass and treble adjustments, microphone mixing with source audio, and three modes of microphone input support (48 dB gain, 48 dB gain with 48V phantom power, and line level). The AUD-220 has three methods of control: push button, RS232, and IR with the optional AUD-220-IR accessory kit.