AYRE QA-9 - Manual (Page 7)

AES/EBU Output
In the case that a USB connection is not available,
the QA-9 also incorporates an AES/EBU output for
compatibility with other systems. One advantage of
the AES/EBU output is that connecting cables in
excess of 300 feet (100 meters) may be used.
Your local Ayre dealer can supply high-quality
balanced-to-single-ended digital adapters if your
system does not accept a balanced XLR digital
connection.
When the USB output is active, the
AES/EBU output is disabled.
DSD Output (QA-9 Pro only)
The Ayre QA-9 Pro also offers conversion to digital
using Sony’s single-bit DSD system. Two DSD
interface formats are available to ensure
compatibility with the widest range of equipment,
SDIF-2 (DSD-Raw) and SDIF-3. Both use three
transformer-isolated 75
Ω BNC connectors (Word
Clock, Bit Clock, Left Data, Right Data).
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