Laney Prism P20 Operating Instructions Manual page 16

EFFECT Switch
This control allows access to eleven different factory studio
quality effects combinations. All these effects can be edited in
various ways. (See effect edit) The edited effect can be stored
together with your AMP sound to a channel as required. You
can also edit an effect and overwrite the factory setting (See
table below) for your future use. (See effect edit)
Effects Compliment
Reverb
Delay
Chorus+& Delay
Chorus + Reverb
Flange + Delay
Tremolo + Reverb
Rotary + Gate
Phaser + Reverb
Chorus + Compressor
Auto-Wah + Delay
Octaver + Delay
16
10
Large Spring Reverb
423mS delay short repeats
Lush Chorus + 423ms delay with short repeats
Deep Chorus + small hall reverb
Medium Flange + 423ms delay medium repeats
Fast Tremolo + Short Plate Reverb
Medium rotart + Long gate
Light Phaser + Spring Reverb
Medium Compression + Lush Chorus
Medium sensitivity wah + Short Delay
Octave above and below + 423ms delay short repeats
10
Factory Preset