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5. First Usage – Quick Start
5.1 Connectors and Controls
The front of the ADI-2/4 Pro SE has 3 hi-precision rotary encoders with push function, 4 buttons,
a standby power button, a high resolution IPS display, and two TRS headphone outputs plus one
Pentaconn.
The output channels 1/2 and 3/4 feed two phones outputs via two independent Extreme Power
driver circuits, optimized for both high and low impedance headphones. Their unbalanced output
signal is of highest quality. With 122 dBA SNR there is no audible hum and noise at those outputs.
Balanced phones mode is automatically activated by using the Pentaconn jack on the front.
In case a phones output is to be used as line output, an adapter TRS plug to RCA phono plugs,
or TRS plug to two TS plugs is required.
The rear of the ADI-2/4 Pro SE has 2 servo-balanced analog inputs on combo XLR/TRS sockets,
2 TRS sockets as impedance-balanced outputs, 2 XLR sockets as electronically balanced out-
puts, TOSLINK optical I/O, a USB socket, a Trigger output and a lockable power socket. An in-
cluded breakout cable is connected to the DB-9 socket and provides AES I/O via XLR and SPDIF
coaxial I/O via RCA.
The ADI-2/4 Pro SE has two analog line inputs that can operate with levels up to +24 dBu. The
electronic input stage uses a servo balanced design which handles unbalanced and balanced
signals correctly, automatically adjusting the level reference.
When using unbalanced cables with the XLR inputs, pin 3 of the XLR jack should be con-
!
nected to ground. Otherwise noise may occur, caused by the unconnected negative input of
the balanced input.
The analog inputs 1/2 include 6 dB digital gain control via DSP, and a choice of +1 dBu, +7 dBu,
+13 dBu, +19 dBu or +24 dBu as reference level, performed in the analog domain.
The short circuit protected, low impedance XLR line outputs do not operate servo balanced!
!
When connecting unbalanced equipment via XLR, make sure pin 3 of the XLR output is not
connected. A connection to ground might cause a decreased THD (higher distortion) and
increased power consumption!
Optical I/O (TOSLINK): The unit automatically detects SPDIF or ADAT input signals. The optical
output can operate as ADAT or SPDIF output, depending on the current setting in the Setup menu
(Options, SPDIF / Remap Keys). Note that only channels 1/2 from the ADAT stream can be ac-
cessed. SMUX and SMUX4 (up to 192 kHz) are still supported.
USB 2.0: Standard USB socket for connection to the computer. The ADI-2/4 Pro SE operates as
Class Compliant device, in either 2-channel or 8-channel mode (configured in Setup). It can be
directly used with Mac OS X and iOS (iPad, iPhone). For Windows the RME MADIface series
driver adds WDM and ASIO.
Socket for power connection. This socket supports locking type jacks as found on the included
RME DC power supply. After inserting the connector carefully turn it by 90° so that it locks. If the
unit turns off easily when moved then the connector is NOT fully inserted into the socket!
Trigger Out provides a 12 V switching signal via 3.5 mm mono jack plug, which can be used e.g.
to switch power amps with Trigger In on and off together with the ADI-2/4 Pro.
User's Guide ADI-2/4 Pro SE – v 1.0
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