Apollo Twin Hardware Manual Chapter 3: Controls & Connectors 21
(2) Preamp Gain & Volume Level Indicator LEDs
The LEDs around the Level knob indicate the relative level of the selected function (in-
put preamp gain or monitor/headphone volume).
Note: The indicator LEDs are red when Monitor (10) is selected and the monitor
outputs are muted.
(3) Channel Selection Indicators
The currently selected input channel is indicated by the lit channel name above its input
meter (CH1 or CH2). Press the Preamp button (9) to switch between channels 1 & 2.
(4) Input Meters
These meters display the incoming signal level for input channels 1 & 2.
Tip: Reduce the input’s preamp gain level (see page 26) if its red clip LED il-
luminates.
(5) Input Type Indicators
These indicators show which input type (mic, line, or Hi-Z) is active for the selected
channel. Use the Input Select button (11a) to change the input type.
Note: Hi-Z input is available for channel 1 only.
(6) Monitor Selected Indicator
When lit, the Level knob (1) controls volume and muting of the monitor outputs (15).
Press the Monitor button (10) to activate the monitor controls.
(7) Stereo Output Meters
These meters display the stereo signal output levels. Output levels are independent of
monitor and headphone volume levels.
Note: Reduce levels feeding the output(s) if a red “C” (clip) LED at the top of the
Output Meters illuminates.
(8) Headphone Selected Indicator
When lit, the Level knob (1) controls the volume of the headphones output (13). Press
the Monitor button (9) to activate the headphones controls (you may need to push it
twice).
(9) Preamp Button
Press PREAMP to activate the input channel controls. Press again to alternate between
channels 1 & 2.
(10) Monitor Button
Press MONITOR to activate the control of volume levels with the Level knob (1). Press
again to alternate between control of the monitor and headphone volumes.
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