The Caline CP-72 Bass Wah/Vol is a WAH/VOL pedal: a single rocker unit that combines a wah effect with a volume pedal. RockBoard's PedalPedia describes it as delivering "both an excellent Wah response tailored for BASS along with Volume function", so the wah sweep is voiced with bass frequencies in mind rather than being a guitar wah adapted for the job.1
The maker also emphasizes its size. The CP-72 is "very compact and much shorter than a standard Wah or Volume pedal, it sits comfortably on most pedal boards", which is the main practical difference from full-size rocker pedals like the Morley Power Wah Volume or the Ernie Ball VPJR: a shorter treadle takes less board space, at the cost of a shorter rocking travel.1
What it does
The pedal covers two jobs in one enclosure. As a wah, Caline says the response is tailored for bass and "easy to manipulate with foot". As a volume pedal, it gives foot control over level. RockBoard's PedalPedia says the pedal is usable in clean or gain settings, meaning it can sit before or after drive stages on a bass rig depending on how the player wants the wah and volume to interact with distortion.1
For players comparing options, the CP-72 sits in the same combined wah-plus-volume territory as pedals like the Hotone Vowpress and the Sonicake VolWah, while players who only need level control can look at dedicated units on the Volume Pedals page. Its bass-specific wah voicing is what sets it apart from the general-purpose combined pedals.1
Power and placement
The CP-72 is an analog circuit running on 9V DC with a center negative plug, drawing 30mA. That draw is small enough for most pedalboard power supplies, though like most rocker pedals of this kind it is not a unit RockBoard's PedalPedia lists as battery powered, so a supply output is needed.1
Videos
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Questions
Is the Caline CP-72 for bass or guitar?
Caline describes the CP-72's wah response as tailored for bass, so the sweep is voiced with bass frequencies in mind. The pedal also carries a volume function, and the maker says it works in both clean and gain settings. Guitarists considering it should weigh that bass voicing against wah pedals aimed at guitar.
How is the Caline CP-72 powered?
The CP-72 runs on 9V DC with a center negative plug and draws 30mA, according to the maker's product information. That is a modest draw, but it still needs a power supply rather than running without one, so plan a slot on a daisy chain or isolated supply accordingly.
Sources (1)
- CP-72 Bass Wah/Vol 2 in 1 by Caline, RockBoard PedalPedia, 2026
