Austrovox Bass 150 - Organ preset

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

The Austrovox Bass 150 is an Austrian tube amp for bass and organ, a roughly 50-watt design despite its name, with a push-pull pair of EL34s. Separate Bass and Organ channels each have two inputs, an ECC808 gain stage, passive treble and bass controls and their own volume, then a second ECC808 recovery stage. A Booster control follows, then an ECC83 gain stage and split-load (cathodyne) phase inverter, a choke-filtered solid-state supply and a 4/8/15-ohm output.

• Made in: Austria
• Wattage: 50W
• Channels: 2
• Preamp tubes: 2× ECC808, 1× ECC83
• Power tubes: 2× EL34

Tags: vintage, bass, el34, two-channel, mid-wattage.

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.