What tubes does the Kalamazoo Model 1 - Main use?

The Kalamazoo Model 1 - Main uses 1x 12AX7 preamp tubes and 1x 6V6 power tubes.

When was the Kalamazoo Model 1 - Main produced?

The Kalamazoo Model 1 - Main was produced 1965–1968.

Kalamazoo Model 1 - Main preset

Verified · 82/100 confidence. Complete schematic. All component values readable. Parameters derived directly from the circuit.

The Kalamazoo Model 1 is the simplest and most basic amplifier in the Kalamazoo line, offering a single-channel tube circuit with minimal controls aimed at the beginner market. Its 5- to 8-watt output is sufficient for home practice and small ensemble use, and its uncomplicated circuit makes it an excellent platform for DIY experimentation. The Model 1 is one of the most readily available and affordable vintage American tube amps.

Years produced: 1965–1968
Made in: USA
Wattage: 5W
Channels: 1
Preamp tubes: 1x 12AX7
Power tubes: 1x 6V6

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.