Fender Cbs 70W Mstrvol Pullsw Super Pro Bmstr preset

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

The CBS 70W Master Volume (pull-switch) Super/Pro/Bandmaster covers late silverface 70-watt models with the pull-switch master volume modification. This late CBS design allowed players to drive the preamp section at lower output volumes.

• Years produced: 1977–1982
• Made in: USA
• Wattage: 70W
• Channels: 2
• Preamp tubes: 4× 12AX7, 1× 12AT7
• Power tubes: 2× 6L6

Tags: american, clean, silverface, 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.