Traynor Yba 1 Yba 4 Bass Master preset

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

The Traynor YBA-1/YBA-4 Bassmaster is the foundational tube head that established Traynor's reputation, delivering a punchy, mid-forward character that worked brilliantly for both bass and guitar. Canadian musicians embraced it as a durable, affordable alternative to British imports.

• Years produced: 1965–1974
• Made in: Canada
• Wattage: 45W
• Channels: 2
• Preamp tubes: 2× 12AX7
• Power tubes: 2× 6CA4

Known for: The Band, April Wine.

Tags: vintage, crunch.

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.