Sony CDP-XA30ES User Manual

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This player has a variable coefficient (V.C.) digital
filter. By selecting the type of filter you want, you can
adjust the sound to match your system, your room, the
music source, etc.

Press FILTER.
The display shows the currently selected filter
number and the filter indicator flashes.

Turn 

≠ AMS ± until the digital filter number

you want appears in the display.
As you turn the 

≠ AMS ± control, the digital

filter number changes cyclically as follows:

If you are playing a disc, the sound will be
interrupted momentarily.

≠ AMS ±

≠ AMS ±

Push 

≠ AMS ± to select the filter.

The original display reappears.
The selected digital filter number is stored in
memory even if you turn off the power.

Z

Press DIGITAL FILTER.
The display shows the currently selected filter
number and the filter indicator flashes.

Press DIGITAL FILTER repeatedly until the
display shows the digital filter number you want.
The digital filter number is stored and the original
display reappears.

CD players use digital filters to eliminate the noise
generated during sampling. You can change the tone of
your music by changing the cutoff characteristics of the
digital filter.
This player has five types of filters with different
coefficient characteristics: “STD,” “1,” “2,” “3” and “4.”
In addition, digital filters “3” and “4” each have three
coefficient patterns, A–C, for more detailed
adjustments.
The following explains the terms you need to know to
understand the characteristics of the digital filters used
in this player.

Sharp roll-off and slow roll-off
Digital filters can be roughly classified into sharp roll-
off types and slow roll-off types, according to their
cutoff characteristics.

n STD n 1 n 2 n 3A n 3b n 3C n 4A n 4b n 4C