JAM Pedals John Achenbach Custom Shop The Ripple Phaser

JAM Pedals

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Product Overview

Contact us and find out why you should buy your next guitar from Liberty Music! We fully inspect your instrument more than once, when received and when shipped. We also will SETUP your instrument at no additional charge prior to shipping your order.

We offer the following to help you secure your next dream guitar;


- We accept trades on any musical instruments from anywhere simply reach out and we take care of all the logistics.


- We offer financing up to 48 Month* with Affirm, Synchrony, and Klarna, contact us today to find out more!


- With a 20% deposit you have 90 days to pay the balance if the guitar is in stock, if it is a pre-order simply put 20% down to secure your guitar and the remainder due once it arrives.

We buy, sell and trade with financing options with Klarna, Affirm and Synchrony available.

We will also beat any competitor's price.

We are an AUTHORIZED JAM PEDALS DEALER. This comes with a full manufacturers warranty and remember you item inspected upon receipt from the supplier and again prior to shipping your order.


TAP tempo
Ramp function: holding the TAP switch will ramp to a second speed. You candetermine the second speed, as well as the rate of the ramp between the two tremolo speeds.
There is a second mode of operation called the Legacy mode which retains and expands on the mk.1’s functionality since now you can choose to have x2 (double) or x1.5 (dotted eighth) speed multiplying options!
New LFOwaveform added: Reverse Sawtooth
CHOP (kill dry) function
In addition to the mk.1's 3 internal EQ trimmers, the mk.2 features a newinternal trimmer to adjustinput gain control to optimise Harmonious Monk mk.2 for use with guitar, bass, keys, or anything else you might want to throw at it!
You can now specify the startup state of the mk.2, to ON or OFF upon receiving power!
The mk.2 comes with the Tap & Ramp mode preselected.
In order to switch between the Tap & Ramp and Legacy modes, keep both footswitches pressed until the LEDs blink, indicating mode change.
Only available while in the Tap & Ramp mode.
A prolonged press of the TAP footswitch will engage ramping from the original to the fixed user-selectable speed.
In order to determine the fixed user-selectable speed, while keeping the TAP footswitch pressed, adjust the Speed potentiometer to taste - make sure to return the Speed to the original position after releasing the TAP footswitch.
In order to determine how long it takes to travel from the original speed to the fixed user-selectable speed, while keeping the TAP footswitch pressed, adjust the Depth potentiometer to taste - make sure to return the Depth to the original position after releasing the TAP footswitch.
This custom Ripple Sine Phaser pedal has a design by John Achenbach, animator for The Simpsons!
Smooth, sweet and transparent vintage-sounding phaser pedal. The “Ripple” is featuring two phase stages resulting in a truly unique and subtle phaser pedal with a great “vibey” tone, that we are very very proud of!
Controls: Speed
It works with a 9V battery or 9V boss-type DC adaptor (negative tip)
It uses only 9mA of power when ON
Dimensions : 111 x 60 x 32 mm
Limited Life-time warranty !