Teisco Checkmate Mono/Stereo Pre-Amp - Channel 2 preset

Verified · 90/100 confidence. Complete schematic. All component values readable. Parameters derived directly from the circuit.

A Teisco Checkmate tube preamp with no power stage. It has two channels, each with bright switch, treble, mid, bass and volume, plus spring reverb, tremolo and a mono/stereo output switch. All five tubes are 12AX7s.

• Made in: Japan
• Channels: 2
• Preamp tubes: 5× 12AX7

Tags: japanese, vintage, preamp, reverb, tremolo, stereo.

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.