What tubes does the Traynor Custom Special YBA-3 use?

The Traynor Custom Special YBA-3 uses 3× 12AX7 preamp tubes and 4× 6CA7 power tubes.

Who famously used the Traynor Custom Special YBA-3?

Steve Albini are among the notable players associated with the Traynor Custom Special YBA-3.

Traynor Custom Special YBA-3 preset

Verified · 87/100 confidence. Complete schematic. All component values readable. Parameters derived directly from the circuit.

The YBA-3 Custom Special is Traynor's high-power all-valve head of the late 1960s and early 1970s. Two inputs feed a single 12AX7 channel with volume, a treble boost switch and Treble Expander, then bass and treble with a bass boost switch and Bass Expander, and a master volume. A 12AX7 long-tail inverter with presence drives four fixed-bias 6CA7s at about 540 V. Built for bass and PA, it also suits guitarists after huge clean headroom.

Introduced: 1967
Made in: Canada
Wattage: 130W
Channels: 1
Preamp tubes: 3× 12AX7
Power tubes: 4× 6CA7

Known for: Steve Albini.

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.