Sony STR-DA4ES Operating Instructions Manual page 33

0 MPEG: Lights up when MPEG signals are
input.
Note
Only the front 2 channels are compatible with
MPEG format. Multi channel surround sound is
downmixed and output from the front 2 channels.
qa DTS: Lights up when DTS signals are input.
When playing a DTS format disc, be sure that
you have made digital connections and that
INPUT MODE is NOT set to ANALOG 2CH
FIXED (see page 42).
qs OPT: Lights up when the source signal is a
digital signal being input through the
OPTICAL terminal.
qd COAX: Lights up when the source signal is a
digital signal being input through the
COAXIAL terminal.
qf L.F.E.: Lights up when the disc being played
back contains the LFE (Low Frequency
Effect) channel. When the sound of the LFE
channel signal is actually being reproduced,
the bars underneath the letters lights up to
indicate the level. Since the LFE signal is not
recorded in all parts of the input signal the bar
indication will fluctuate (and may turn off)
during playback.
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