Xda-2 Remote Control - Emotiva XDA-2 User Manual

XDA-2

XDA-2 Remote Control

The solid aluminum full-function remote control for the XDA-2 duplicates all the front panel
controls on the XDA-2 unit. (The remote control has separate buttons for On and Standby
whereas the front panel has a single button which toggles.) The remote control has one
additional button which toggles between ASRC On and ASRC Bypass.
ASRC (asynchronous sample rate converter)
The ASRC button (on the remote control but not the front panel) engages and disengages
the ASRC in the XDA-2. The ASRC is a sophisticated digital processor that re-samples
incoming digital audio to a fixed 96k sample rate and, as part of the conversion process,
eliminates virtually all jitter on the incoming signal.
Engaging the ASRC will always produce an audible improvement in sound quality when
the source has a lot of jitter (computer USB outputs usually have a lot of jitter; the jitter on
other inputs varies depending on the source component and cables). Excessive jitter tends
to make music sound "blurred", although the effect is somewhat subjective. If the jitter is
relatively low to begin with, eliminating it will not produce an audible improvement, but the
96k re-sampling process itself will produce a slight but audible difference.
Since the ASRC is only necessary in some situations, the XDA-2 offers the option of
bypassing it when desired. (You can switch the ASRC in and out while listening, and simply
pick the mode that sounds better for a particular song or input.) The VFD will momentarily
display ASRC On or ASRC Bypass to indicate when the ASRC is switched.
Note: The ASRC Bypass button takes effect immediately, and may be operated while
music is playing to determine which way you prefer to listen to a given source.
Note: When the ASRC is engaged, the display will still show the original incoming
sample rate (when it displays the sample rate) rather than the re-sampled (96k)
sample rate.
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