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Gladius Dynamic Overdrive

Based On
King Tone Soloist
Effect Type
Build Difficulty
Project Summary
A single-channel adaptation of side A of the popular Duellist dual pedal, based on a stripped-down Ibanez® Tube Screamer with hot-rodded features.
Gladius 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 Gladius Dynamic Overdrive is based on the King Tone Soloist, traced by Aion FX in 2022. First released in 2020, the Soloist is side “A” (String-Singer) of the Duellist dual pedal.

It’s no secret that it’s based on the Tube Screamer, but its modifications are significant enough that depending on the control settings, it can either sound nothing like a TS or exactly like one.

However, the Soloist is not an exact copy of the circuit inside the Duellist. A “Body” potentiometer has been added, and the “Fat” toggle mode has been swapped for the new “Edge” mode. The internal DIP switch has been removed, so the “Warmth” and “Asymmetric” modes from the Duellist are not in this circuit.

The Gladius unifies these two circuits, adding the internal DIP switch from the Duellist so that the Warmth and Asymmetric modes are once again available. Otherwise, it’s a direct adaptation of the Soloist standalone pedal.