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.
[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:
Clicking the Gear icon opens up 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.