Ampeg SVT-140TC preset

Verified · 82/100 confidence. Complete schematic. All component values readable. Parameters derived directly from the circuit.

The Ampeg SVT-140TC is a late-1980s stereo solid-state bass amp built around one preamp and two identical power amps. Two inputs feed an op-amp preamp with gain, Ultra Low and Ultra High switches and four-band active EQ (low, low-mid, high-mid and high), then a compressor/limiter and a bucket-brigade chorus with its own footswitch. Line out and line in jacks sit between preamp and power amps, each built on complementary MJ15001/MJ15002 outputs.

• Wattage: 140W
• Channels: 1

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

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.