McIntosh MC275 50th Anniversary - Controls and Indicators; Amplifier Switches and LED Indicators

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Right Side Switch, Left Side Switches and Indicators
Standby Power
On Indicator
AUTO OFF Switches the Power Save
On (ENABLED)or Off (DISABLED)
INPUT Switch selects between
STEREO and MONO Modes
of operation
LED Illumination Color:
Amber - Warmup Mode
Green - Normal Operation
Red - Sentry Monitor
Small Signal
Vacuum Tube
POWER Switch Turns
AC Power ON, or OFF/
REMOTE
INPUT Switch selects
between balanced or
unbalanced input