Madamp A15 MkI - Lead preset

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

The Madamp A15 MkI is a 15-watt, two-channel valve amp sold as a DIY kit by the German kit maker Madamp, with an 'American' preamp on three ECC83s. The clean channel, voiced after the 1960s brownface sound, has treble, bass, a Fat switch and Volume. The high-gain channel adds cascaded stages with Gain, a two-position Boost and its own treble, bass, mid and Volume. The later Mk2 revised the clean tone stack and layout.

• Made in: Germany
• Wattage: 15W
• Channels: 2
• Preamp tubes: 3× ECC83

Tags: boutique, two-channel, low-wattage, clean, 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.