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Velorum Dynamic Overdrive

Based On
Ibanez/Vemuram TSV808
Effect Type
Build Difficulty
Project Summary
A limited-edition collaboration between Ibanez and Vemuram that combines elements of the Tube Screamer and Jan Ray to create a highly tweakable transparent overdrive.
Velorum Dynamic Overdrive printed circuit board

Printed Circuit Board

What's included?
PCB only. Build instructions and parts list can be viewed or downloaded from this page.


In stock

Complete Kit

Not yet available.
Kits are developed based on interest, so if you’d like to see one for this project, let us know.
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Project overview

The Velorum Dynamic Overdrive is based on the Ibanez/Vemuram TSV808, a limited-run collaboration between Ibanez and Vemuram combining their Tube Screamer and Jan Ray pedals. It was originally released in 2019 and had completely sold out within a year or two, and since then they have fetched upwards of $2,000 on the used market.

It was traced by The Tone Geek in 2022 who verified that it was pretty much exactly as described in the marketing. The first stage of the circuit is very similar to the Jan Ray, while the second stage is much like a Tube Screamer tone stack but with the tone control fixed to a specific position. All in all, it resembles a Jan Ray more than a Tube Screamer—but the two circuits were already fairly similar, so the distinction is not as black-and-white.

The clean 3-knob control layout is deceptively simplistic. There are two additional trimmers inside the pedal, Bass and Saturation, that can be adjusted from the north side using a screwdriver. There are also DIP switches inside the pedal to select between symmetric and asymmetric clipping modes.

The Velorum project is a direct adaptation of the TSV808, but with all controls moved to the front of the enclosure for easy access. The trimmers have been converted to standard potentiometers. The DIP switches have been merged into a single 3-way toggle switch that selects between Tube Screamer mode (one diode in each direction), asymmetric mode (one diode in one direction and two in the other), and a third mode with two diodes in each direction.