Ayre QA-9, Owner'S Manual

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It is recommended to set the audio
level prior to recording by playing a
loud passage from the analog source.
Adjust the QA-9 gain so that the peaks
occasionally illuminate the amber
LEDs but not the red clipping LED.
If the red clipping indicator LED(s)
illuminate during recording, it is
recommended to restart the recording
with reduced levels.
Signal level metering is usually provided in the
recording hardware or software, but the QA-9
front panel level meters provide the most
accurate insight into the actual analog-to-digital
conversion.
Display
The 3-digit numeric display indicates the current
sample rate (e.g., “192”) for the active output.
Vertical bar-graph LEDs on either side of the
display indicate the digital signal level being
generated by each channel of the QA-9.
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