Ayre QA-9 Owner's Manual download pdf (Page 11)

Digital Filter

The digital filter used in the PCM encoding of the

Ayre QA-9 features two user-selectable algorithms.

One algorithm produces greater accuracy in the

time domain and is labeled “Listen”. The other

algorithm produces greater accuracy in the

frequency domain and is labeled “Measure”.

Normally the selector switch is set to the “Listen”

position when listening to music. However some

listeners may prefer the additional high-frequency

energy provided by the “Measure” position.

This setting applies to both the USB and

AES/EBU outputs.

Display Brightness

The front panel display of the QA-9 has two

brightness levels. The switch position labeled

“Bright” will make the display readable in all

conditions. Setting the switch to the position

labeled “Dim” may be desirable for low-light

conditions.

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Ayre QA-9 Owner's Manual Page 11