DDA208 Series 2 1x4 Dual Digital Audio Distribution Amplifiers are designed to regenerate, isolate and distribute digital audio data formatted in accordance with specifications AES3-1992 and IEC 958. This is commonly called AES/EBU formatting or AES3.

DDA208 Series 2 inputs feed AES audio to eight separate outputs. Internal jumpers select either re-clocking or non-reclocking of the input signal. In most cases, re- clocking is preferred, as this feature improves the integrity of weak or distorted input signals. Re-clocking may be switched off to allow distribution of AES sync signals, Dolby E encoded AES signals, or other signals that should not be re- clocked.

DDA208 Series 2 units work with AES signals that contain sample rates from 27 through 192kHz and16-bit through 24-bit density, thus permitting very high resolution signals to be distributed.

The Model DDA208-XLR uses XLR connectors and operates from and drives a 110-ohm balanced shielded twisted pair distribution system per AES3-1992.

The Model DDA208-BNC uses BNC connectors and operates from and drives single-ended 75-ohm coaxial cable per AES-3id-1995 and is designed to integrate easily into video facilities.

S/PDIF (consumer) formatted digital audio data differs primarily in the use of consumer type "RCA" audio connectors in an unbalanced 75 ohm system and can be handled by a DDA208-BNC with use of an RCA-to-BNC input cable.

Input Loop-through connection is provided to permit multiple units to be stacked, or to insert the DDA208 into your digital workflow. Switchable line termination is provided via internal jumpers. Standard practice dictates that the last AES input be terminated; therefore, if you are not using the loop-through feature, Input Termination should be switched ON.



• Accepts sample rates from 27 to 192kHz

• Switchable re-clocking regenerates stable data before distribution

• Loop thru transformer balanced and isolated inputs

• Switchable input termination

• Individual, transformer balanced and isolated 110-ohm XLR outputs (XLR only)

• Individual isolated 75-ohm BNC outputs (BNC only)

• Eight outputs

• Quiet, internal power supply

• AC Input 100-250 VAC 50/60 Hz, 25W Maximum

• Attractive and rugged 1RU package