Ayre QA-9, Owner'S Manual

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Word Clock Outputs (QA-9 Pro only)
Digital studio equipment with word clock inputs
can be slaved to the QA-9 Pro with 75
Ω
coaxial
cable(s). The transformer-isolated BNC connectors
present TTL-level signals derived directly from the
ultra-low jitter master clock inside the converter.
There are no standards for external
word clock signals. Contact Ayre for
support with compatibility.
AC Power
The QA-9 may be plugged directly into an
unswitched wall outlet. Although proprietary RFI
(radio-frequency interference) filtering is built into
the QA-9 A/D, in some situations an AC power-line
filter (such as those offered by Ayre) may provide
additional sonic benefits.
As virtually all computers use switch-mode power
supplies that introduce unwanted RFI on the AC
power line, it may be beneficial to use an AC
power line filter for the computer and its
accessories (e.g., display monitor), many of which
also utilize switch-mode power supplies.
Break-In
100 to 500 hours of music
played through the system will
ensure full break-in.
Due to the manufacturing processes used for the
printed circuit boards, wires, and capacitors, a
break-in period is necessary for the QA-9 A/D
converter to reach its full performance potential.
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