Eko EVC-50 - Channel 2 preset

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

The EVC-50 is a two-channel valve combo with two 12-inch speakers, sold under Eko, the Italian instrument brand from Recanati. Each channel has two inputs, two ECC83 triode stages and its own volume and tone controls. An ECL86 runs a tremolo that flashes a neon lamp onto a light-dependent resistor with depth, speed and a footswitch, and an ECC83 long-tailed-pair inverter drives two cathode-biased EL503 pentodes, with a silicon-diode supply.

• Made in: Italy
• Channels: 2
• Preamp tubes: 4× ECC83, 1× ECL86
• Power tubes: 2× EL503

Tags: italian, 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.