More like FM + filter modulation, disguised as distortion. I stumbled onto this configuration, and it’s turning out to be versatile as a “multi-effects” unit. With a few adjustments to the parameter settings, this preset will morph into flanger, filter, wah, delay, ring mod, and resonator FX. Not the standard-issue types of these effects, but some unique variations on those themes.
Expression Pedal Heel: DELAY B = 0 ms.
Expression Pedal Heel: MOD DEPTH = 10
Expression Pedal Toe: DELAY B = 50 ms.
Expression Pedal Toe: MOD DEPTH = 2
WET MIX: Tone down the extreme distortion with some dry signal.
DELAY A & DELAY B: Something strange goes on here. DELAY A seems to be the “distorter”. DELAY B can exhibit distorted echoes found in DELAY A. But the reverse isn’t true. It reverts to filter action.
FEEDBACK: Everything from regenerated repeats to resonators to small ‘verbs to “slide whistle” effects (at settings above 100).
SLUR: Great in conjunction with higher FEEDBACK settings.
MOD SHAPE: More high frequency sidebands created going from SQUARE – TRIANGLE – SINE.
MOD DEPTH: Reverse wah effects with decreasing depth of the filter modulation.
FILTER: An additional “mix” control over the distortion.
