Product Category: AD/DA Converters

RME ADI-4 DD 24bit/96k AD/DA Converter

RME's ADI-4 DD is a simplified and highly cost-efficient smaller version of the renowned ADI-8 DD. Built into a space-saving half-rack space enclosure, the ADI-4 DD includes all of the advanced technology of the ADI-8 DD, except for sample rate conversion and TDIF ports.

The actual states of incoming and outgoing signals and ongoing operations within the unit are displayed by LEDs in an easily overseeable way. SyncCheck®, already found in other RME products, not only shows if an input signal is locked, but also if multiple inputs are in synchronicity. Furthermore RME's SyncAlign® technology prevents accidental errors of ± 1 sample misalignment between the AES/EBU inputs. The AES output signal can be set to Professsional or Consumer subcode. Channel 1/2 can optionally be received and output optically (TOSLINK).

RME's SteadyClock™ technology guarantees an excellent performance in all clock modes. Its highly efficient jitter suppression enables the ADI-4 DD to refresh and clean up any clock signal, and to provide the clock signal as reference clock at the word clock output. Additionally, Intelligent Clock Control (ICC) will maintain the last sample rate detected as valid in case of fault and loss of input signal. The device can be stacked without limit, all devices will be sample synchronous by using word clock. All settings are stored at power-off.

The device basically consists of two converters: four AES-3 inputs to double ADAT outputs, and double ADAT inputs to four AES-3 outputs. The double ADAT ports enable full 8 channel support, from 32 kHz up to 96 kHz (S/MUX). The unit provides one XLR I/O directly. A DB-25 connector allows for a use of industry standard AES-3 I/O breakout cables. Setting an internal connector easily changes the DB-25 connector to meet the pinout of Tascam (Digidesign), Yamaha and Euphonix cables.

Input AES/EBU: 1 x XLR, 4 x via DB-25 connector, electrically isolated, highly sensitive input stage (< 0.3 Vpp), SPDIF compatible
Output AES/EBU: 1 x XLR, 4 x via DB-25 connector, transformer balanced, 5 Vpp
SPDIF Optical: Second ADAT port can be switched to serve as SPDIF I/O
Input ADAT® optical: 2 x TOSLINK, 24 bit, Bitclock PLL
Output ADAT® optical: 2 x TOSLINK, 24 bit
Input word clock: BNC, Signal Adaptation Circuit (functional from 1.2 Vpp input signal)
Output word clock: BNC, low-impedance driver stage, 4 Vpp into 75 Ohms, short-circuit-proof

Sync sources: ADAT optical, AES/EBU, word clock
Varipitch: by input signal or word clock
Sample rates: 32 kHz, 44.1 kHz, 48 kHz, 88.2 kHz, 96 kHz, variable (Sync/word clock)
Sample rate range: AES, word clock: 27 kHz-105 kHz, ADAT 33 kHz - 57 kHz

Jitter: Internal clock < 1 ns, word clock In < 2 ns, ADAT In < 2 ns
Jitter sensitivity: all PLLs operate even at 100 ns Jitter without problems
Jitter suppression: circa 30 dB (2.4 kHz)

Power Supply: Operates with voltages ranging from 7-30V DC oder AC, allowing operation with practically any power source, including batteries
High-quality switching power supply included, for worldwide operation at 100-240 Volt
Dimensions: 215 x 44 x 100 mm
Warranty: 2 years

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