What tubes does the Lectrolab R200 use?

The Lectrolab R200 uses 12AX7 preamp tubes and 6V6 power tubes.

When was the Lectrolab R200 produced?

The Lectrolab R200 was produced 1956–1962.

Lectrolab R200 preset

Verified · 88/100 confidence. Complete schematic. All component values readable. Parameters derived directly from the circuit.

The Lectrolab R200 is a tube guitar amplifier produced by the Lectrolab division of the Chicago-based Rowe International company in the late 1950s. Lectrolab amps were frequently built to OEM specifications and sold under numerous house-brand names through department stores and music retailers, making them one of the most widely distributed yet least-recognized amplifier platforms of the era. The R200 circuit is a conventional American tube design offering clean to mildly overdriven tones typical of late-1950s small combos.

Years produced: 1956–1962
Made in: US
Wattage: 8W
Channels: 2
Preamp tubes: 12AX7
Power tubes: 6V6

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.