What tubes does the Kalamazoo Reverb12 Original use?

The Kalamazoo Reverb12 Original uses 3x 12AX7 preamp tubes and 2x 6V6 power tubes.

When was the Kalamazoo Reverb12 Original produced?

The Kalamazoo Reverb12 Original was produced 1965–1967.

Kalamazoo Reverb12 Original preset

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

The Kalamazoo Reverb 12 Original is the first version of Kalamazoo's reverb-equipped combo, adding spring reverb to a 12-watt tube circuit. It was designed to give entry-level players the reverb sound popularized by Fender at a lower price point. The original Reverb 12 features a warm, slightly dark reverb tail that complements its compressed, 6V6-powered output stage.

Years produced: 1965–1967
Made in: USA
Wattage: 12W
Channels: 1
Preamp tubes: 3x 12AX7
Power tubes: 2x 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.