The Intelix AUD-340 is a 40 watt Class D amplifier with 70V or 100V outputs. The amplifier features two analog audio inputs, one digital audio input, and a balanced microphone input with ducking functions. Additional features of the AUD-340 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-340 has three methods of control: push button, RS232, and IR with the optional AUD-340-IR accessory kit.