TC-Helicon VoiceLive Touch 2 Reference Manual - Manual (Page 10)

The Mix Menu
4
FX Mix page
Guitar parameter
The Guitar parameter sets the level of the guitar signal plus all
applied effects.
Aux parameter
The Aux parameter sets the level of audio received on the
Aux input jack.
Roomsense parameter
The Roomsense parameter sets the level of the Roomsense
microphones for the headphones only. When the Roomsense
parameter in the Setup menu is set to Voice, this control is
unavailable.
Harmony parameter
The Harmony parameter trims the global mix level of the
Harmony and Doubling effects. Factory presets were created
with this parameter set to 0 dB. There is an additional 6 dB of
gain available.
Delay/Reverb parameter
The Delay/Reverb parameter trims the global mix level of the
Delay and Reverb effects. Factory presets were created with
this parameter set to 0 dB. There is an additional 6 dB of gain
available.
Loops parameter
The Loops parameter sets the level of loop playback. Note that
if you set this parameter below 0 dB, your initial recording pass
will sound louder than the looped playback, though this may
be desirable.
Using the Loops parameter creatively
The Loops parameter in the FX Mix page can also be useful for
fading out loop playback: Slowly slide your finger along the Slider
FX bar while the Loops parameter is highlighted, then release.
Once you get the slide rate correct, the level will continue to
drop. The same is true for fading in loop playback.