JAM Pedals "Achenbach" Ripple

The JAM Pedals "Achenbach" Ripple is a one-knob, two-stage phaser from JAM Pedals, sold as a limited artwork version of the standard Ripple. JAM Pedals describes it as having "a deep, mellow and distinctly vibey voice. It adds movement without overwhelming the instrument, bringing funky rhythmic parts, arpeggios and unusual passages to life with a smooth, transparent sweep"¹.

A compact two-stage circuit creates what the maker calls a deep, soft-edged phase sound with a strong sense of movement and minimal tonal coloration¹. Where a four-stage phaser gives a more pronounced, vocal sweep, a two-stage design like this one keeps the effect subtle and musical, closer to a gentle movement under the notes than an obvious filter.

A two-stage phaser with a deep, mellow voice

The Ripple's single control is a Speed knob, which sets the modulation rate from slow movement to what JAM Pedals calls "animated, quirky pulses"¹. That is the whole interface: one knob, one footswitch, no depth or feedback controls. The two-stage circuit topology is the homage here, and the maker frames the pedal as "an homage to 2-stage phasing"².

Because the effect is voiced to sit under the instrument rather than on top of it, the Ripple suits parts where you want motion without the sweep taking over. JAM Pedals says it performs well before or after overdrive pedals, offering different levels of integration and prominence¹. Before overdrive, the phase is driven and compressed by the gain stage; after it, the sweep is more prominent in the finished sound. Both orders are valid, and the maker does not favor one.

The pedal carries a 30-day money-back guarantee, with a refund "no questions asked" if you are not satisfied within 30 days of receiving it¹.

Artwork versions and the Ripple Bass

The "Achenbach" is one of several limited artwork versions of the Ripple, all with the same sound and circuit. JAM Pedals offers the custom artwork versions as the "Blue Dragon" Ripple, "Concentric" Ripple, "Moon Soup" Ripple, "Relic" Ripple and the "Achenbach" itself¹. Each limited artwork pedal is a one-of-a-kind hand-painted piece, so the pedal you receive differs in detail from the photos shown¹.

There is also a bass version. The Ripple Bass is recalibrated so the modulation's focus provides rich, wet textures for the bass frequency range, rather than the voicing aimed at guitar². Like the guitar version, it comes in limited artwork editions, including the "Achenbach" Ripple Bass and the "Bat Race" Ripple Bass²⁷⁸.

Power, size and buying details

The Ripple runs on a 9V battery or a 9V DC supply with a center-negative plug, drawing only 9 mA¹. That low draw makes it friendly to daisy chains and small power supplies. At 215 g and 11.1 x 7 x 4.8 cm including jacks and controls, it occupies a compact footprint on a pedalboard¹.

The regular price is £264.00 GBP, and JAM Pedals ships it DDP with 20% UK VAT and all duties included, so there are no extra charges on delivery¹.

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