The DMX-88 will digitize up to 8 microphone or line-level inputs and send 8 channels of audio data to the attached PC via the USB 2.0 connection. The DMX-88 is also capable of playing back 2 analog channels of audio data, combined into a mono signal, to a PA and a headphone output on the unit. This output can be either the playback signal from the host PC, or an analog "monitor all" combination of all 8 inputs, or a blend of the two. The 2 independent analog monitor outputs are a selectable mix of any of the 8 inputs and can be used as a "mix-minus" output to a telephone interface or video conferencing system.