What tubes does the Mesa Boogie Mark I Reissue use?

The Mesa Boogie Mark I Reissue uses 5× 12AX7 preamp tubes and 4× 6L6 power tubes.

When was the Mesa Boogie Mark I Reissue produced?

The Mesa Boogie Mark I Reissue was produced 1989–2008.

Mesa Boogie Mark I Reissue preset

Verified · 86/100 confidence. Complete schematic. All component values readable. Parameters derived directly from the circuit.

The Mark I Reissue, built from 1989 to 2008, is Mesa/Boogie's recreation of the original single-channel Boogie. Two inputs feed the same cascaded preamp, the second at lower gain, through a treble, bass and middle stack into a second volume and further gain stages, with spring reverb and an effects loop. Four 6L6s run through a long-tail inverter with a presence control and a 60/100-watt switch.

Years produced: 1989–2008
Made in: USA
Wattage: 100W
Channels: 1
Preamp tubes: 5× 12AX7
Power tubes: 4× 6L6

Tags: american, reissue, high-gain, 6l6, high-wattage.

Schematic-derived preset files for the Neural DSP Quad Cortex and 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.