What tubes does the Epiphone EA-71 - Main use?

The Epiphone EA-71 - Main uses 3× 12AX7 preamp tubes and 2× 6L6 power tubes.

When was the Epiphone EA-71 - Main produced?

The Epiphone EA-71 - Main was produced 1963–1970.

Epiphone EA-71 - Main preset

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

The Epiphone EA-71 is a 50-watt professional tube combo closely related to the EA-70, likely representing a revised or updated version of the Constellation V bass or guitar series. Its 6L6 output stage provides clean headroom and extended frequency response suited to both electric guitar and bass applications.

Years produced: 1963–1970
Made in: USA
Wattage: 50W
Channels: 2
Preamp tubes: 3× 12AX7
Power tubes: 2× 6L6

Tags: vintage, clean, american.

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.