User's Manual

Apollo x4 Hardware Manual Controls & Connectors 24
(12) Monitor Button
Press this button to enter MONITOR Mode and activate the monitor and headphone
controls. Press again to change the currently selected stereo output so it can be adjusted
with the Level knob (1).
Note: The Selected Stereo Output Indicators (5) determine which volume
(MONITOR, HP1, or HP2) can be controlled with the Level knob (1).
(7) Options Display
This panel displays the state of the preamp and monitor options, which are controlled by
the six Option Buttons (8).
In Preamp mode, the upper row displays the preamp options and the lower row is unlit.
In Monitor mode, the lower row displays the monitor options and the upper row is unlit.
(8) Option Buttons
Each of the six Option Buttons has dual functions. In Preamp mode, the buttons control
the preamp options for the currently selected input channel. In Monitor mode, the
buttons control the monitor and headphone options. The individual options for both
modes are detailed in this section.
Unison Integration
In Preamp mode, the Option Buttons can also be used to control Unison-
enabled UAD preamp, guitar/bass amp, and pedal plug-in parameters. See the
Apollo Software Manual for complete Unison details.
Options Display (7) and Option Buttons (8)
MONITORPREAMP
MONITORPREAMP
OPTICAL
OUT IN
OFF ON
12VDC
POWER
1
2 R
LINE OUT MONITOR
3
4
LINE OUT
MIC/LINE 4 MIC/LINE 3 MIC/LINE 2 MIC/LINE 1
L
OPTICAL
OUT IN
OFF ON
12VDC
POWER
1
2 R
LINE OUT MONITOR
3
4
LINE OUT
MIC/LINE 4 MIC/LINE 3 MIC/LINE 2 MIC/LINE 1
L
1 2 1 2
a b c d e f
g h i j k l
43
8
7
12
5
6
9 10 11
161718
21
20
19
15
13 14
1 2