JAM Pedals updates Wahcko wah to MK2 with custom inductor and Q-trimmer

September 22, 2026 · 4 sources

JAM Pedals has updated its Wahcko wah to the MK2, adding a custom-designed inductor, a second internal trimmer for Q and internal DIP switches for guitar or bass operation. Guitar Pedal X reported the update on September 24, 2026¹; Gearnews published its coverage on September 23².

The MK2 replaces the original's red Fasel inductor with a custom JAM inductor modeled on the TDK inductors used in 1960s Cry Baby and Vox wah circuits³¹². The maker describes it as "inspired by the vintage TDK inductors found in classic 1960s Cry Baby and Vox wah circuits"³. The six-position SWEEP rotary switch on the side of the pedal carries over, as does the internal input-gain trimmer; both trimmers default to approximately 12 o'clock³. The new Q trimmer adjusts the character and intensity of the wah response³. Internal DIP switches set guitar or bass mode, with bass mode extending the sweep to lower registers³. The rocker tension is adjustable with an included 4 mm Allen key, and the footplate is now a rubber tread rather than plexiglass³². The pedal runs on a 9V DC adaptor or a 9V battery, draws 10 mA and is true bypass³.

Guitar Pedal X gives the price as $399 on the JAM Pedals webstore and says the pedal should be available imminently at major international dealers¹. Gearnews reports it available now from Thomann². Hand-painted artwork versions are also listed, including a "Loading Dock" Wahcko⁴.

Guitar Pedal X's Stefan Karlsson called it "One of the best sounding and most flavourful Wah Pedals since 2008," while noting he personally prefers a more compact wah¹.