Zero Loss FX Loop

The true Zero Loss FX Loop, the Original and Best.

The authentic Zero Loss high voltage effects loop I first invented around 2006, updated through the years.  Would never have been if not for George Metropoulos (unsatisfied with all existing loops) asking me to invent something new. This loop has set the standard ever since, become an industry staple.

 My best to George, wish him the best of luck in all things, his future endeavors.

Rev 4 adds integrated level switching to the Zero Loss loop. On board switch allows selection of pedal level or line level to accommodate anything from pedals to high end rack gear at the flip of a switch.

 Officially support this loop when installed in Marshall 1959, 1987, 2203 and 2204 models, and authentic replicas of these amps. The installation instructions are specific to this style of amp. The loop can and does work great in many, many other tube amp circuits, but do not supply specific instructions for them. Just a great many amps out there, some proprietary.  Please download the instructions from the link below to determine if the loop is compatible with your amp. Also, a good tube amp tech/designer can tweak this loop to work in most applications. It has been used successfully in tube amps from 1 to 200 watts.

Loop dimensions are 3 3/8" x 1 3/4".

Included in Board Only version:

• Loop PC board - loaded and tested.

• Will include some misc. full kit extras as/if still available upon request.

-Download the current instructions here: Zero Loss Loop Version Rev4M

-Link to drill templates and older version instructions: Here

-Link to more info on the Metropoulos forum: FX Loop thread   -Unfortunately not available at the moment

-Facebook group dedicated to the loop:  Zero Loss FX group

This is the assembled/tested board for OEMs and those who don't require the extras/kit additions (switch, wire, ground lug etc).