The Caline CP-66 The SO WHAT Flanger is a compact analog flanger pedal. RockBoard's PedalPedia describes it as producing "the famous jet-flanger sound", the sweeping, jet-engine roar that players usually mean when they talk about a classic flanger1. It sits in the budget end of the flanger pedal field, alongside pedals like the Rowin Flanger and Donner Jet Convolution.
What it does
The CP-66 uses what Caline calls a classic BBD simulation circuit. BBD, or bucket-brigade device, is the analog delay-line approach behind vintage flangers, and RockBoard's PedalPedia says this circuit lets the pedal "deliver a deep and rich tone"1. The maker's own description of the sound is "Sounds like the jet engine roaring, the famous jet-flanger sound"1.
Controls
Four knobs shape the flanging effect:
| Control | What it does |
|---|---|
| Speed | Sets the rate of the flange sweep |
| Regen | Sets the intensity of the flanging |
| Width | Sets the range of the sweep |
| Delay | Sets the delay time of the modulated signal |
RockBoard's PedalPedia says "The four controls Speed, Regen, Width and Delay allow you to shape your desire sound"1. The exact function of each knob beyond its name is not given by the maker, so the descriptions above follow the standard meaning of these control names on flangers.
Power
The CP-66 runs on a 9V DC supply with a center negative plug and draws 50mA1. That current draw is modest by pedal standards, but it is above what a battery-style low-draw circuit needs, so plan your supply accordingly.
The listed width of the pedal is given as 000.00 mm, which is a placeholder figure in the maker's listing, so the pedal's exact dimensions are not established1.
Videos
Guitar Safari
Guitarworks1000
Chuck's Guitar Geekery
Questions
Is the Caline CP-66 analog or digital?
Caline lists the CP-66 The SO WHAT Flanger as an analog circuit. It uses what the maker calls a classic BBD simulation circuit, the bucket-brigade approach associated with vintage flangers, which Caline says delivers a deep and rich tone.
What power does the Caline CP-66 need?
The CP-66 runs on a 9V DC supply with a center negative plug and draws 50mA. As with most compact pedals, use a dedicated supply or a daisy chain with enough current headroom rather than a battery.
Sources (1)
- CP-66 The SO WHAT Flanger by Caline, RockBoard PedalPedia, 2026





