Ampeg SS-70 Preamp - Channel A preset

Close · 65/100 confidence. Most values readable. Minor gaps filled by inference from similar circuits.

The Ampeg SS-150 was a solid-state bass amplifier head producing 150 watts, part of Ampeg's 1970s transition toward solid-state amplification. It offered a clean, high-headroom sound well-suited to the emerging session and touring bassist market of the 1970s, with a straightforward EQ section and reliable solid-state reliability. The SS-150 represented Ampeg's response to the growing demand for lighter, maintenance-free alternatives to the company's heavy tube heads.

• Years produced: 1973–1978
• Made in: USA
• Wattage: 150W
• Channels: 1

Tags: american.

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.