Echolette B 40 N - Channel II preset

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

The B 40 N is an Echolette valve amp with four inputs and two volume controls. An ECC83 input stage feeds an ECC83 with level, treble, bass, middle and brilliance controls, and an ECC83 phase inverter drives two EL34s. A GZ34 rectifier supplies the high voltage, a separate bias supply sets the output stage, and a standby switch is included.

• Made in: Germany
• Channels: 2
• Preamp tubes: 3× ECC83
• Power tubes: 2× EL34

Tags: german, vintage, el34, 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.