Sony STR-DA2ES - Manual (Page 33)

Amplifier/Tuner Operation
33 GB
0 Tuner indicators: Lights up when using the
receiver to tune in radio stations, etc. See
pages 25–30 for tuner operations.
qa SLEEP: Lights up when sleep timer is
activated.
qs EQ: Lights up when the equalizer is
functioning.
qd D.RANGE: Lights up when dynamic range
compression is activated. See page 54 to
adjust the dynamic range compression.
qf DTS: Lights up when DTS signals are input.
qg SP.OFF: Lights up when headphones are
inserted or the SPEAKERS switch is set to
OFF.