User's Manual

User’s Guide ADI-2 Pro FS – v 2.5

17.4 USB

USB: interface mode.

This mode can be activated manually by selecting Basic Mode – USB. The device enters USB

mode automatically when Basic Mode is set to Auto and a USB connection is detected. USB

has priority over AD/DA mode.

In USB mode all inputs are routed to USB, all outputs are fed from USB. In SETUP – Options –

Device Mode / DSD – CC-Mode the unit can be configured as 2-channel (Stereo) or 6/8-

channel (Multi-channel) device. Sample rates higher than 192 kHz and DSD128/256 are only

available in 2-channel mode, which is why this mode has been chosen as default.

Class Compliant Stereo mode

In 2 channel / Stereo mode only the analog inputs are sent as USB record signal, and the ste-

reo USB playback signal is available simultaneously at all analog and digital outputs.

The two block diagrams show the small differences between both modes.

USB Playback channels 3/4 can only be monitored in multi-channel mode. In stereo mode se-

lecting USB 3/4 plays channels 1/2.

The option Digital Out Source - Main Out (SETUP – Options – Device Mode / DSD) sends the

processed signal Main Out 1/2 to the digital outputs AES, SPDIF and ADAT, for example to

connect active monitors having digital inputs.