Lectrolab R200 preset

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

The Lectrolab R200 is the smallest amp in the Lectrolab line, sold widely through catalogs and retailers in the late 1950s and early 1960s. Two inputs feed a pair of 12J5 single-triode stages with a Volume control between them, then a single-ended 50L6GT output valve with a Tone control on its grid. Series-wired heaters and a 35Z5GT rectifier keep it simple and cheap, giving a warm clean that breaks up early.

• Made in: USA
• Channels: 1
• Preamp tubes: 2× 12J5
• Power tubes: 1× 50L6GT

Tags: american, vintage, 6v6.

Schematic-derived preset files for the Neural DSP Quad Cortex and 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.