Soldano X99 preset

Close · 78/100 confidence. Most values readable. Minor gaps filled by inference from similar circuits.

The Soldano X99 is an all-tube, MIDI-programmable rack preamp that succeeded the X88R. Rather than separate channel circuits, it runs one cascaded SLO-style gain path of five dual triodes whose coupling caps, bright caps, cold-clipper bypasses and stage routing are switched in and out by ten light-dependent opto-isolators, so each stored preset recalls a different voicing from clean to lead. A Preamp gain control, Treble/Bass/Middle stack and Output level feed a cathode-follower output.

• Made in: USA
• Channels: 1

Tags: american, preamp, high-gain.

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.