Ampeg SS-70 - Channel B preset

Close · 64/100 confidence. Most values readable. Minor gaps filled by inference from similar circuits.

The Ampeg SS-70 is a mid-1980s solid-state guitar amp. Its power amplifier uses a differential input pair and TIP31C/TIP32C drivers to feed a complementary pair of MJ15001/MJ15002 output transistors into a 4-ohm minimum load. Line out and line in jacks sit between preamp and power amp, alongside a headphone jack and a speaker mute switch.

• Wattage: 70W
• Channels: 2

Tags: american, solid-state, 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.