PRESONUS AudioBox Stereo Quick Start Manual page 241

9.1.7 Expand Channel
All channels feature an Expand Channel button, which expands the visible channel to the
right, revealing further Console routing possibilities. Audio, Instrument, and Bus Channels will
include Insert and Send Device Racks. FX Channels will only have an Insert Device Rack.
9.1.8 Channel Types
9.1.8.1 Input
Input channels represent the configured hardware audio inputs. They can be mono or stereo,
depending on the configuration of the hardware input they represent. Use the Input Channels
to accurately meter inputs or to add effects processing to an input.
9.1.8.2 Audio
Audio Channels are direct representations of Audio Tracks in the Arrange view. Each Audio
Track will have a corresponding Audio Channel in the Console, with corresponding Record
Enable, Monitor Enable, Solo, and Mute controls.
9.1.8.3 Instrument
Instrument Tracks in the Arrange view have no directly corresponding channels. An
Instrument Track outputs to a virtual instrument, and the virtual instrument then creates
sound. Thus, virtual instruments output audio to Instrument Channels in the Console. A virtual
instrument might have any number of outputs, as described in the Set Up Multiple Virtual
Instrument Outputs section of the "Recording" chapter, and each will have a corresponding
channel in the Console.
9.1.8.4 Bus
The audio output of multiple channels can be routed directly to a single Bus Channel, which is
always a stereo channel. This lets you create a submix so that the audio from several channels
can be processed together before being routed to the main output. Although less common, it
is also possible to use sends to route audio to Bus Channels.
For instance, several drum tracks might be routed to a Drum Bus, where the audio is
compressed and equalized, and then routed to the main output. That audio could also be
routed to an FX Channel, through a Send, to apply a reverb effect, which would be applied to
all audio routed to that FX Channel.
9.1.8.5 FX
The FX Channel is used to apply effects to audio via sends from other channels. Audio can be
routed from any channel through a send to an FX Channel, which can have any number of
effects inserted in its Insert Device Rack. For instance, several keyboard tracks and a guitar
123