Ampeg ET-2B Super Echo Twin - Channel 1 preset

Verified · 80/100 confidence. Complete schematic. All component values readable. Parameters derived directly from the circuit.

The ET-2B Super Echo Twin is a stereo guitar amplifier with echo effects, delivering two independent channels through separate speakers. Channel 1 provides the direct signal path with the warm 6L6 tone. The Super Echo Twin's lush stereo echo made it a distinctive early effects-equipped guitar amp.

• Years produced: 1962–1967
• Made in: USA
• Wattage: 40W
• Channels: 2
• Preamp tubes: 4× 12AX7
• Power tubes: 4× 6L6

Tags: guitar, american, vintage, mid-wattage, reverb, clean, stereo.

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.