Epiphone EA-25 Century - Instrument preset

Verified · 86/100 confidence. Complete schematic. All component values readable. Parameters derived directly from the circuit.

The EA-25 Century is an Epiphone tube combo with tremolo. It has a microphone channel built on a 12AY7 and an instrument channel built on a 5879 pentode, each with its own volume, and the instrument side has a stepped tone network. A 12AX7 phase inverter drives a pair of 6V6GTs into an 8-ohm speaker, with a 5Y3GT rectifier. A 6SQ7 runs the tremolo, which has a depth control and a remote switch.

• Made in: USA
• Channels: 2
• Preamp tubes: 1× 12AY7, 1× 5879, 1× 12AX7, 1× 6SQ7
• Power tubes: 2× 6V6GT

Tags: american, vintage, 6v6, tremolo, 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.