Ph Out 3/4; Digital Connections; Aes - RME Audio ADI-2 Pro User Manual

If operation of the phones output 1/2 is desired, the Dual Phones mode has to be switched on.
The menu has the additional option to turn off the rear outputs as soon as PH 1/2 is plugged in.
Default is Mute On when plugged.
While these outputs are praised as ideal head-
phone outputs, eventually as well as technically
they also are ideal line outputs.
In case the output should operate as line out-
put, an adapter TRS plug to RCA phono plugs,
or TRS plug to TS plugs is required.
The pin assignment follows international stan-
dards. The left channel is connected to the tip,
the right channel to the ring of the TRS
jack/plug.
RME has a history of phones outputs working perfectly as line outputs. The Extreme Power
phones outputs of the ADI-2 Pro continue this legacy by delivering exceptional performance
with widest compatibility and versatility. For example turning on Balanced Phones mode, the
two TRS jacks on the front perfectly serve as high-quality TRS balanced line outputs.

21.5 PH Out 3/4

The second 2-channel DAC in the ADI-2 Pro realizes a completely independent headphone
output, PH 3/4. Channels 3/4 are available on the front as 1/4" TRS (stereo) jack. In any mode
3/4 can be set to any input, no matter which input is currently used by outputs 1/2. Using the
SRC on 3/4's input it can even run clock independent from output 1/2.
The Extreme Power driver stage is 100% identical to PH 1/2. To simplify usage of the main
phones output it has two output levels: Hi-Power off, equalling +7 dBu, and Hi-Power on, equal-
ling +22 dBu. As explained above these match the settings +4 dBu and +19 dBu of PH 1/2.
Output PH 3/4 can also be used as unbalanced line output, see PH Out 1/2.
The menu includes an option to turn off the rear outputs as soon as a connector is plugged into
the PH 3/4 jack. Default is Mute On when plugged.

22. Digital Connections

22.1 AES

The ADI-2 Pro provides one XLR AES/EBU input and output each via the included breakout
cable when connected to the D-sub 9 pin socket on the back of the unit. Connection is accom-
plished using balanced cables with XLR plugs. Input and Output are transformer-balanced and
ground-free.
Input
The AES input is used when the unit is set to Auto and it is the only digital input signal. In case
USB is active and multi-channel mode has been set, the AES input signal is available as input
channels 3/4 when performing a USB recording. In 2-channel mode AES is only available for
the Phones Out 3/4 by manually selecting this input. Chapter 17 includes more details and
block diagrams for further explanation.
The AES input can be sample rate converted and clock de-coupled by activating the SRC on it.
User's Guide ADI-2 Pro © RME
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