Chapter 3: Controls & Connectors; Controls Overview; Operating Modes - Universal Audio Apollo Twin Hardware Manual

Chapter 3: Controls & Connectors
Complete details about the Apollo Twin USB hardware controls and all connector jacks
on the front and rear panels are provided in this chapter.
Note: To learn how to set input gain levels (mic, line, and Hi-Z) and output vol-
umes (monitors and headphones), see
Start chapter.

Controls Overview

Some Apollo Twin USB controls have multiple functions. The function of each control
depends on the current operating mode and the current settings within that mode. To
control a particular setting, the control must be activated for the function.

Operating Modes

Apollo Twin USB's top panel has two operating modes: Preamp and Monitor. The func-
tion and availability of the top panel controls vary depending on the active operating
mode. The active mode is selected with the PREAMP and MONITOR buttons. Press the
button to activate the mode. Each mode is explained in greater detail below.
Note: All top panel functions can be operated concurrently (without switching
modes) from within the companion Console software application. See the
Software Manual
PREAMP Mode
When Apollo Twin USB is in Preamp mode, all top panel controls are related to
input functions only. To adjust any input function, press the PREAMP button to
enter Preamp mode and activate the input channel controls.
Note: Monitor and headphone functions cannot be performed in Preamp
mode.
Preamp Channels
Apollo Twin USB has two analog input channels and one set of input channel controls.
The channel controls adjust all channel functions for the currently selected channel.
After switching the selected channel, the other channel can be adjusted.
Channel Selection
The currently selected channel is shown by the CH1 and CH2 indicators
at the upper left of the main display panel, above the input meters. The
top panel controls only adjust the functions for the currently selected
channel.
When in Preamp mode, press the PREAMP button or the LEVEL knob to
change the selected channel. Press again to switch back to the other channel.
Apollo Twin USB Hardware Manual
for details.
Setting Hardware I/O Levels
17 Chapter 3: Controls & Connectors
in the Quick
Apollo
USB 3
OPTICAL IN
LINE