Yamaha RX-V457 - Manual (Page 13)

CONTROLS AND FUNCTIONS
9
IN
TR
ODUC
TI
ON
K 96/24 indicator
Lights up when a DTS 96/24 signal is input to this unit.
L LFE indicator
Lights up when the input signal contains the LFE signal.
M Input channel indicators/speaker indicators
Indicate the channel components of the current digital
input signal.
Indicate the number of speakers connected in SPEAKERS
(page 23), or indicate the channel being adjusted in SP
LEVEL (page 57).