Ampeg SVT-400T - Channel A preset

Verified · 87/100 confidence. Complete schematic. All component values readable. Parameters derived directly from the circuit.

The SVT-400T is a high-powered solid-state bass head delivering 400 watts for large venue applications. Channel A provides clean, transparent bass amplification with the SVT's characteristic tonal flexibility. The SVT-400T offered touring bass players the power of the SVT brand in a lighter, more reliable solid-state package.

• Years produced: 1988–1993
• Made in: USA
• Wattage: 400W
• Channels: 1

Tags: bass, american, vintage, high-wattage, solid-state.

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.