First Usage - Quick Start; Connectors And Controls - RME Audio ADI-2 Pro User Manual

5. First Usage – Quick Start

5.1 Connectors and Controls

The front of the ADI-2 Pro 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.
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 out-
put signal is of highest quality. With 120 dBA SNR there is no audible hum and noise at those
outputs.
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 Pro has 2 servo-balanced analog inputs on combo XLR/TRS sockets, 2
TS sockets as unbalanced outputs, 2 XLR sockets as balanced outputs, TOSLINK optical I/O, a
USB socket, and a lockable power socket. An included 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 Pro has two analog line inputs that can operate with levels up to +24 dBu. The elec-
tronic input stage uses a servo balanced design which handles unbalanced and balanced sig-
nals 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 +4 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 bal-
anced! 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 opti-
cal output can operate as ADAT or SPDIF output, depending on the current setting in the Setup
menu. Note that only channels 1/2 from the ADAT stream can be accessed. SMUX and SMUX4
(up to 192 kHz) are still supported.
USB 2.0: Standard USB socket for connection to the computer. The ADI-2 Pro 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.
User's Guide ADI-2 Pro © RME
7