Sunny Day Delay

The Sunny Day Delay is the latest revision of a classic Dr. Scientist pedal based on the famed PT2399 delay chip. This newest version now features a brand new tone control, mix knob and expression input all in a smaller form factor than previous versions. Offering classic, warm delay tones and ambient, modulated washes of repeats, the Sunny Day Delay can find a home on any pedalboard.

MSRP: $199 USD

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  • All analog circuit and controls
  • Uniquely designed circuit
  • High quality analog signal path
  • Premium parts and components throughout
  • True Bypass with soft touch relay switching
  • Full control over wet/dry mix
  • Expression pedal control over Mix
  • Buffered Input and Output
  • Top mounted audio and power jacks
  • Designed and handmade in B.C., Canada


  • Delay – Sets the delay time from nearly instant to just over a second
  •  Repeats – Sets the number of repeats from 1 to oscillating
  • Tone – Adjust the frequency response of the repeats
  • Mix – Adjusts the balance between the input signal (Dry) and the effect (Wet) signal
  • Mod Depth – Increases the amount of warble in the repeats
  • Mod Rate – Sets the speed of the modulation
  • Volume – Controls the overall signal level
  • Mod/Osc Footswitch – Either turns the modulation on/off or can be held for maximum repeats
  • Bypass – Engage or disengage the effect




  • 500kΩ/1kΩ
  • 100mA @ 9VDC, 2.1mm centre negative plug
  • True Bypass with soft touch relay switching

Additional Specs

  • Mono input, Mono output, TRS Expression input
  • Exp Input: TRS cable, 10k-25k Ohms ideally
  • All analog controls
  • Dimensions: 70mm wide, 129mm long, 59mm tall (2.75” wide, 5.1” long, 2.3” tall)