WEM ER15 Head - Channel 2 preset

Verified · 82/100 confidence. Complete schematic. All component values readable. Parameters derived directly from the circuit.

The ER15 is a 1965 WEM valve head with two channels. Each input has its own Volume, Treble and Bass controls around a twin-triode stage, and each channel's second triode drives one of the two output pentodes, the pair cross-coupled to work as a push-pull phase splitter. The output valves are cathode-biased with a shared resistor, drive a 15-ohm speaker output, and run from a full-wave valve rectifier.

Tags: british, vintage, el84, low-wattage, two-channel.

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.