WEM Copicat Mk III - Echo preset

Close · 70/100 confidence. Most values readable. Minor gaps filled by inference from similar circuits.

The WEM Copicat Mk III is a British magnetic tape echo unit from Watkins Electric Music, one of the most iconic and long-lived echo devices in rock history. The Copicat used a loop of magnetic tape to create repeating delay effects, with adjustable speed and echo level controls. It was used by artists ranging from surf guitarists to progressive rock players and remains a highly sought-after vintage effect device.

• Years produced: 1958–1985
• Made in: UK
• Preamp tubes: 1× ECC83

Known for: Hank Marvin, Robert Fripp.

Tags: british, vintage.

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.