Epiphone EA-4T / 4TL / 6T - Normal preset

Verified · 85/100 confidence. Complete schematic. All component values readable. Parameters derived directly from the circuit.

The EA-4T, EA-4TL and EA-6T share one two-channel Epiphone circuit and differ only in speakers (EA-4T 15"+10", EA-6T 2x12"). 6EU7 channels with bass/treble cut-boost feed a 6FQ7 long-tail inverter and a pair of fixed-bias 6L6GCs on a silicon supply of about 470 V. A 6C4 oscillator drives a lamp/LDR optical tremolo.

• Made in: USA
• Channels: 2
• Preamp tubes: 3× 6EU7, 1× 6FQ7, 1× 6C4
• Power tubes: 2× 6L6GC

Tags: american, vintage, 6l6, 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.