Leslie Vibratone 30A / 30C Amplifier preset

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

The Model 30 amplifier powers the Vibratone 30A and 30C, early Leslie rotary speaker cabinets sold under the Vibratone name. It is an organ amp, not a guitar amp: a balanced input from the console feeds two 6P5 triode drivers, which drive four 6L6s in parallel push-pull through an interstage transformer, with two 5Z3 rectifiers and field-coil speakers fed through a dividing network. It is not related to the later Fender Vibratone.

• Made in: USA
• Channels: 1
• Preamp tubes: 2× 6P5
• Power tubes: 4× 6L6

Tags: american, vintage, 6l6, clean.

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.