RTGS3 Icon

The Input Section

The Input Section lets you set the audio input source, input level, and effects routing. It also provides controls for basic hipass filtering and soundfile playback.
The Input Section of the main RTGS3 window set to Live Audio In

[Input Level faders 1/2] = lets you trim or boost the level of the incoming audio per channel.

ADC Hipass Filter = sets the cutoff point under which undesirable low frequencies are filtered from the audio input.

"Thru" fader = lets you route the incoming audio directly to the RTGS3 outputs.

"Route" menu = incoming audio which is routed to the RTGS3 outputs can be sent through the Effects section ("Pre-Effects") or directly to the output faders ("Post-Effects").

"Mode" menu = sets whether RTGS3 takes incoming audio from an external device ("Live Audio In", for example the internal microphone, or an input channel on your audio hardware device) or from a soundfile read from your hard disk ("Soundfile").

Setting the "Mode" menu to "Soundfile" displays the soundfile playback controls:
The Input Section of the main RTGS3 window set to Soundfile

Clicking the Gear icon opens up the Audio Input Setup window:
The Audio Input Setup window

"Input Device" menu = sets which audio input hardware device RTGS3 uses for audio input.

"Input Source" menu = if your audio input hardware device has different sources (such as the built-in hardware, which usually has an internal microphone as well as a line-in plug), you can choose between them here.

"Input Channel 1/2" menus = if your audio input hardware device has multiple input channels, you can select here which channels RTGS3 uses.