Ceriatone Overtone Special Mini 20 preset

Verified · 84/100 confidence. Complete schematic. All component values readable. Parameters derived directly from the circuit.

The OTS 20 Mini Lunchbox is a compact version of Ceriatone's Dumble Overdrive Special-style amp. Three preamp valves run a volume into treble, middle and bass with Mid-Boost and Rock/Jazz switches, then a relay-switched overdrive with ratio and level, a master and presence. Two 6V6GTs on a solid-state rectifier with regulated supply rails, a three-way feedback switch, footswitched OD and PAB, and an OD trim complete it.

• Made in: Malaysia
• Wattage: 20W
• Channels: 1
• Power tubes: 2× 6V6GT

Tags: boutique, hand-wired, clean, crunch, mid-wattage.

Schematic-derived preset files for 16 Fractal and Line 6 modelers: Axe-Fx II/XL/XL+, Axe-Fx III, FM3, FM9, and the full Helix family (Floor, LT, Rack, HX Stomp, HX Stomp XL, Native).

Gridleak extracts amp parameters from original circuit schematics using AI vision — component values, gain staging, tone stack topology, tube types — then generates native preset files for every supported modeler. Every extraction is scored 0–100 and the score is published.