Echolette B30 preset

Verified · 83/100 confidence. Complete schematic. All component values readable. Parameters derived directly from the circuit.

The Echolette B30 is a German hybrid amplifier voiced for electric bass and guitar. Two jack inputs, each with its own level control, feed a silicon transistor stage, then Bass, Treble and Volume controls and an ECC83 phase inverter driving a push-pull pair of EL500s with strong negative feedback. It gives about 35 watts peak into a switchable 6- or 15-ohm output, and the inputs also take a microphone.

• Made in: Germany
• Wattage: 35W
• Channels: 1
• Preamp tubes: 1× ECC83
• Power tubes: 2× EL500

Tags: german, vintage, hybrid, bass, 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.