The JAM Pedals "Metal" Wahcko is a hand-painted artwork version of the Wahcko mk.2, an expressive wah pedal for guitar and bass made by JAM Pedals. It offers six selectable frequency ranges, adjustable wah response through internal trimmers, and a bass mode that extends the sweep for lower-register instruments1.
The "Metal" version is the same circuit and sound as the standard Wahcko mk.2, differing only in its artwork: each one is a one-of-a-kind hand-painted piece, and the pedal you receive will differ in detail from the photos shown1.
A wah for guitar and bass
At the heart of the Wahcko mk.2 is JAM Pedals' custom inductor, which the maker describes as inspired by the vintage TDK inductors found in classic 1960s Cry Baby and Vox wah circuits1. The Wahcko has been in the JAM Pedals line since 20081.
The pedal's controls and adjustments:
| Control or feature | What it does |
|---|---|
| SWEEP rotary switch | Side-mounted, six-position switch selecting from six distinct frequency ranges1 |
| Q trimmer (internal) | Adjusts the character and intensity of the wah response; defaults to approximately 12 o'clock1 |
| Input-gain trimmer (internal) | Retained from the original Wahcko; defaults to approximately 12 o'clock1 |
| Rocker tension | Adjustable with the included 4 mm Allen key1 |
| DIP switches (internal) | Configure the pedal for guitar or bass1 |
The internal Q trimmer is new to the mk.2, and the original Wahcko's internal input-gain trimmer is also retained, giving two internal ways to shape the response before the side-mounted SWEEP switch is even touched1.
For bass players, the internal DIP switches set the pedal to bass mode, which extends the sweep to lower-register instruments1. JAM Pedals lists Mick Thomson among the Wahcko's users, alongside Nile Rodgers and Mateus Asato1.
The "Metal" Wahcko is a one-of-a-kind hand-painted pedal. The pedal you receive will differ in detail from the photos shown on the maker's product page1.
Versions and custom artwork
The "Metal" Wahcko is one of several custom artwork versions of the Wahcko mk.2, all with the same sound and different artwork2. JAM Pedals lists these versions:
The Wahcko mk.2 is offered in custom artwork versions, including "Loading Dock", "Metal", "Noiz R Us", "Silver Sky", and "Achenbach"1. Every limited artwork pedal is a one-of-a-kind hand-painted piece, and the pedal received will differ in detail from the photos shown3.
For UK buyers, the maker ships the pedal DDP, with 20% UK VAT and all duties included and free shipping, so there are no extra charges on delivery1.
Videos
JAM pedals
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Sasha Ivantic
Sources (3)
- "Metal" Wahcko, JAM Pedals (www.jampedals.com)
- “Achenbach” Wahcko, JAM Pedals (www.jampedals.com)
- Wahcko, JAM Pedals (www.jampedals.com)
