User's Manual

6
User’s Guide ADI-2 DAC v2.2 © RME
4. Brief Description and Characteristics
The ADI-2 DAC is a 2-channel digital to analog converter in a half-rack (9.5") enclosure of 1 U
height. Latest 32 bit / 768 kHz converters offer up to 120 dBA signal to noise ratio. This value is
not only printed in the brochure – it is what the unit achieves in real-world operation.
Reference class tech specs throughout are combined with an unprecedented feature set. A
powerful DSP adds all kinds of useful audio processing, including 5-band parametric EQ, fast
Bass/Treble adjustment, Crossfeed, and a new concept in Loudness sound control.
Operation is quick and easy through 3 encoders with push button function and 4 more buttons
to access dedicated menus. The unit remembers all current settings, even the menu position.
Additionally the unit’s whole setup as well as equalizer settings can be stored under individual
names.
A high resolution IPS panel for the graphical operation surface eases operation even more, and
displays further functions provided by the DSP, namely Peak level meters, a 30-band analyzer
in DIGICheck biquad filter technology, and a State Overview screen listing the current states of
SPDIF, USB and clock.
The digital inputs SPDIF coaxial and optical can be used alternately. SPDIF optical also sup-
ports 2 channels of ADAT operation, at up to 192 kHz.
When used as USB interface, Class Compliant UAC 2 enables up to 768 kHz sample rate on an
iPad. The same is available on computers for high resolution of PCM, DXD and DSD at up to
768 kHz / DSD256.
The balanced and unbalanced outputs are fitted with both XLR and RCA jacks. The unit uses a
fully balanced and DC-coupled circuit design, for highest phase accuracy at lowest roll-off.
The Extreme Power headphone output provides reference sound and headroom. RME’s unique
IEM output offers unprecedented low noise for latest super-sensitive In-Ear phones.
To maintain the full dynamic range within the best operating level, discrete 4-stage reference
level settings were realized for maximum dynamic range (-5, +1, +7, +13 dBu). The digital vol-
ume control of the ADI-2 DAC operates distortion free over a range of 190 dB, therefore does
not cause any tampering of the sound.
The ADI-2 DAC supports sample rates between 44.1 kHz and 768 kHz. Furthermore, RME's
SteadyClock FS guarantees exceptional performance in all clock modes. Thanks to a highly
efficient jitter suppression, the DA-conversion always operates on highest sonic level, being
completely independent from the quality of the incoming clock signal.
The ADI-2 DAC shines in both studio and home usage. Its click- and noise-free on/off operation
and a comfortable, illuminated standby button add to the soft, modern desktop design. An Auto-
Dark mode removes all disturbing lights without sacrificing operation and setup. The included
remote control offers comfortable control of the ADI-2 DAC directly from the preferred listening
position with stellar flexibility through four additional, freely programmable keys.
Battery operated usage is possible through a 12V connector.