Fender Twin Reverb AA270 - Vibrato preset

Verified · 89/100 confidence. Complete schematic. All component values readable. Parameters derived directly from the circuit.

The Fender Twin Reverb AA270 is an early silverface transitional model retaining the fundamental blackface circuit while moving to the new cosmetics following the CBS acquisition. It delivers approximately 100W through four 6L6 tubes into two 12" speakers with spring reverb and vibrato.

• Years produced: 1968–1969
• Made in: USA
• Wattage: 100W
• Channels: 2
• Preamp tubes: 4× 12AX7, 1× 12AT7
• Power tubes: 4× 6L6

Tags: american, clean, vintage.

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.