What tubes does the Garnet B260D BTO Bass use?

The Garnet B260D BTO Bass uses 1× 12AX7, 1× 6AN8, 1× 6AU6, 1× 6SN7 preamp tubes and 4× 6CA7 power tubes.

When was the Garnet B260D BTO Bass produced?

The Garnet B260D BTO Bass was produced 1966–1971.

Garnet B260D BTO Bass preset

Close · 64/100 confidence. Most values readable. Minor gaps filled by inference from similar circuits.

The B260D BTO Bass is the bass head of Garnet's BTO series; BTO stands for Big Time Operator, not the band Bachman-Turner Overdrive. A triode input stage feeds a passive treble and bass network and a triode recovery stage, with rear-panel switches for volume, treble and bass voicing and a footswitchable 6AN8 Stinger fuzz. A 6AU6 bias tremolo and a transformer-coupled 6SN7 driver feed four fixed-bias output pentodes on a silicon supply.

Years produced: 1966–1971
Made in: Canada
Wattage: 120W
Channels: 1
Preamp tubes: 1× 12AX7, 1× 6AN8, 1× 6AU6, 1× 6SN7
Power tubes: 4× 6CA7

Tags: canadian, vintage, bass, el34, high-wattage.

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.