Magnatone 280-A - Channel A preset

Verified · 88/100 confidence. Complete schematic. All component values readable. Parameters derived directly from the circuit.

The Magnatone 280-A is a dual-channel tube amplifier from Magnatone's later production era, offering multiple input options and the company's signature warm tonal character. The dual-channel design catered to players who needed microphone and instrument inputs simultaneously.

• Years produced: late 1950s–early 1960s
• Made in: USA
• Channels: 2

Tags: american, vintage, clean.

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.