Ampeg SS-150 preset

Close · 68/100 confidence. Most values readable. Minor gaps filled by inference from similar circuits.

The Ampeg SS-150 is a late-1980s solid-state guitar amp. Its power amplifier board, revised in 1988, uses a differential input pair and MJE15030/15031 drivers to feed two parallel pairs of MJ15022/MJ15023 output transistors on plus and minus 39-volt rails, with a thermal switch in the speaker line and patch jacks to break into the power amp input. The same power board was used in the VH-150 head.

• Wattage: 150W
• Channels: 1

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.