Boss WP-20G Wave Processor


  • Type
  • Color
  • Level
  • Mode
  • Effect Level


Boss USA

If you're looking for vintage guitar-synth sounds, the WP-20G Wave Processor™ is for you! This compact pedal gives GK-equipped guitarists six synth-type waveforms plus modulation and delay effects.

  • Fat synth sounds and effects in a compact pedal for GK-equipped guitars
  • Provides 6 synth-type waves and effects—Saw Lead, Square, Ring Mod, Slow Gear, Sitar and Acoustic
  • 11 chorus and delay effects, plus Color and Level knobs for further tweaking
  • Rugged, dual-pedal design with simple, knob-based controls

Most recent forum threads


Where to find one?

your browser doesn't support AJAX?

low frequency oscillator lfo-controlled fx pedal stompbox stomp box guitar effects pedal modulation modulate time-based lfo digital delay delay echo repeat delay/reverb
Syndicate content

Subscribe to our newsletter

Also check out Effects Database's social media accounts: