What tubes does the Gibson Kehr use?

The Gibson Kehr uses 3× 12AX7 preamp tubes and 4× 6V6 power tubes.

When was the Gibson Kehr produced?

The Gibson Kehr was produced 1963–1967.

Gibson Kehr preset

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

The Gibson KEHR is a reverb-equipped version of the KEH keyboard amplifier series, adding spring reverb to the organ-optimized clean amplification circuit. Four 6V6 output tubes deliver warm, broad-bandwidth clean tones designed for faithful reproduction of electronic keyboard and organ signals. The reverb adds spatial depth suited to organ playing styles of the 1960s. Like the KEH-2, the KEHR is a specialist vintage American keyboard amp prized by collectors.

Years produced: 1963–1967
Made in: USA
Wattage: 35W
Channels: 2
Preamp tubes: 3× 12AX7
Power tubes: 4× 6V6

Tags: american, clean, vintage.

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.