RME Audio ADI-2 Pro, User Manual

Page: 39 / 114

User’s Guide ADI-2/4 Pro SE – v 1.0
39
17. Modes
17.1 Auto
The ADI-2/4 Pro SE is an AD/DA converter, USB audio interface, USB DAC, analog headphone
amp, format converter and digital monitoring device, with extended flexibility and versatility,
equipped with 5 input sources and 8 output paths. Usually that means an overflowing menu struc-
ture and endless searches in the menus to get it working in even simple applications.
To prevent such frustrating situations the ADI-2/4 Pro SE includes an (and ships with activated)
Auto setup mode. When
SETUP
– Options – Device Mode /DSD – Basic Mode
is set to Auto , the
unit will turn into different operating modes depending on the connected cables:

Preamp: Analog in to Analog out. This mode is active when no digital input signal and no USB
is detected.

AD/DA: Converter Mode, analog in to all digital outs, digital in to all analog outs. This mode
becomes active as soon as a digital signal is attached. This signal will also become the signal
source. In case more than one digital signal is found the user has to manually select the
source to be monitored. The SRC is active as default and assigned to SPDIF. Clock mode is
slave to AES in, but will adapt to the detected source (Auto).

USB: or interface mode, or USB DAC. If USB is detected all inputs are routed to USB, all
outputs are fed from USB. USB has priority over the converter mode. In Setup the unit can
be configured as 2-channel or 6/8-channel device.
There are two more modes available, but not via Auto, only by manually activating them.
Digital
Through Monitor (automatic clock and source selection of the digital inputs plus internal D to D
routing) allows to insert and monitor AES, SPDIF and ADAT signals. In case of ADAT only chan-
nels 1/2 are monitored, but all 8 channels are passed through.
DAC combines clock and input
source selection for easiest operation in home and HiFi usage.
In all modes (except DAC) Phones Out 3/4 is freely configurable, any possible source can be
monitored independently. This includes USB: when selecting one of the above modes manually
all inputs are still transferred to USB, and playback is possible when manually selecting USB as
signal source on analog output 3/4.
The unit remembers all settings, and loads these automatically when it is switched on again.
The following pages show block diagrams and include more details of these modes.
For a simplified and clearer representation, the special function
Rear TRS Source Phones 3/4
has not been drawn. It is available in all modes. For the function see block diagram chapter 34.26.