Davoli Professional - Bass preset

Verified · 84/100 confidence. Complete schematic. All component values readable. Parameters derived directly from the circuit.

The Krundaal (Davoli) Professional of 1966 is an all-valve amp with Guitar and Bass inputs, each with its own tone and volume controls. The guitar side has a valve tremolo with depth and speed and a footswitch jack to stop it. Two ECC82s split the phase and drive a push-pull pair of fixed-bias EL34s into a multi-tap output transformer with negative feedback, powered by a silicon-diode doubler rather than a rectifier valve.

• Made in: Italy
• Channels: 2
• Preamp tubes: 2× ECC83, 3× ECC82
• Power tubes: 2× EL34

Tags: italian, vintage, el34, tremolo, two-channel.

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.