Matthews Effects


The Surgeon offers you 3 different delay options. Choose between "Vicodin" a dark tape like delay with control over the warble, "Morphine" a standard delay with a wide range of eq going from a dark warm analog voicing to a bright digital delay or get experimental with "Oxygen" by mixing in a auto filter sweep into your delay.

Controls are

  • Dose: Controls the mix of the delay
  • Regen: How much the delay will repeat
  • Pulse: Controls the time of the delay up to 1000ms
  • Mutation: Changes depending on what mode your on. 
  •  - Vicodin: Controls the speed of the warble on the repeats
  •  - Morphine: Controls the eq on the delay, go from dark analog to bright digital
  •  - Oxygen: Controls the mix of the auto filter sweep on the delay.
  • Mode Switch: Takes you between 3 different delay types
  •  - Vicodin: A dark tape like delay with control over the speed of an LFO
  •  - Morphine: A basic delay with eq control
  •  - Oxygen: Delay with an Auto filter sweeping the repeats


    • 3 delay options
    • Top Hole Jacks
    • Click less True Bypass
    • 4.77" x 2.6" x 1.39" (121.1mm x 66mm x 35.3mm)
    • This pedal requires standard 9V DC Negative power