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1.5 TREBLE Control
1.6 MIDDLE Control
1.7 BASS Control
This trio of controls allows you to dial-in the exact amount of high, mid, and low
frequencies. The manner in which each one of these controls behaves and
interacts with the others is dependent on the amp type selected.
NOTE: In keeping with the originals, certain models will produce almost no sound
when these three tone controls are turned all the way down (counterclockwise).
NOTE: Not all of the original amps that we modeled have controls for Treble, Middle
and Bass. In such cases, rather than simply leaving the non-existent control unem-
ployed, we allow you to use all three to effectively increase the tonal range of the
original. For more details, see the explanation of each amp type starting on p.21.
Power Amp Controls
1.8 PRESENCE Control
This control allows you to adjust the amount of Presence (high frequency
“sparkle”) in your sound.
If the original amp doesn’t have a Presence control, this will have a different
function.
NOTE: Presence is a function of a power amp containing a negative feedback cir-
cuit, and not all the original amps we modeled contain one – for example, none of
the four Vox amps we modeled (AC15, AC15TB, AC30 & AC30TB) feature a nega-
tive feedback circuit. Furthermore, not all amps that have a negative feedback cir-
cuit necessarily feature a Presence control. For example, the original BLACK 2x12
– negative feedback in the power amp? Yes. Presence Control? Nope. Whenever a
modeled amp didn’t have a Presence control, rather than have this knob do abso-
lutely nothing, we used it to control something else. For more details on exactly
what the PRESENCE control does on each model, see the explanation of each
amp type starting on p.21.
1.9 CH VOLUME Control
This knob allows you to adjust the overall volume of your ToneLab. You can use
this to adjust the volume while preserving the tonal character, including the dis-
tortion created by the Valve Reactor circuit.
NOTE: Some effect settings may produce unwanted distortion. If this occurs, turn
down the CH VOLUME.