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17.6 DAC
This additional mode is a manual option and not available via Basic Mode Auto. It must be acti-
vated manually by choosing Basic Mode – DAC.
DAC simplifies operation and source selection when the ADI-2/4 Pro SE is used like a typical HiFi
DAC:
Simple 2 channel stereo operation
Easiest switching between the sources to be monitored, like USB and SPDIF
In this mode the source selection of Line Out 1/2 also defines the clock source of the unit. Chang-
ing SPDIF/AES the ADI-2/4 Pro SE will automatically sync to SPDIF/AES input signal, thus work-
ing in clock mode slave. When switching to USB the unit operates in clock mode master (USB
asynchronous).
The AD conversion always uses the last set sample rate of USB. Phones Out 3/4 always monitor
the same source signal as Line Out 1/2, but still have fully independent settings (Vol, EQ etc).
Class Compliant Stereo mode
In 2 channel / stereo mode only the analog inputs are sent as USB record signal, and the stereo
USB playback signal is available simultaneously at all analog and digital outputs.
The option Digital Out Source - Main Out (SETUP – Options – Device Mode / DSD) sends the
processed signal Line Out 1/2 to the digital outputs AES, SPDIF and ADAT, for example to con-
nect active monitors having digital inputs.
Class Compliant Multi-channel mode
With USB connected, 3 stereo devices are active for recording and 4 stereo devices for playback.
However, since the Phones output continues to follow the Main Out output, the analog outputs
can be used to listen to either channels 1/2 or 3/4, but not both at the same time.
User's Guide ADI-2/4 Pro SE - v 1.0
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