Traynor Bassmaster Yba1 preset

Verified · 80/100 confidence. Complete schematic. All component values readable. Parameters derived directly from the circuit.

The Traynor Bass Master YBA-1 is the definitive Canadian bass amplifier, designed by Pete Traynor and built by Yorkville Sound in Toronto beginning in 1967. Its EL34 power section gave it a warm, harmonically rich character that set it apart from American alternatives, and its robust construction made it a workhorse on the Canadian club circuit throughout the late 1960s and 1970s. The YBA-1 became a staple for Canadian rock and folk musicians who needed an affordable yet powerful alternative to imported British amplifiers, and its tone has since attracted guitarists seeking a compressed, touch-responsive sound. It remains one of the most collectible Canadian amplifiers ever produced.

• Years produced: 1967–1974
• Made in: Canada
• Wattage: 45W
• Channels: 1
• Preamp tubes: 2× 12AX7
• Power tubes: 2× EL34

Known for: Geddy Lee, Randy Bachman.

Heard on: American Woman — The Guess Who (1970).

Tags: british, 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.