Fender Cbs 70W Mstrvol Pullsw Super Pro Bmstr Rev preset

Close · 75/100 confidence. Most values readable. Minor gaps filled by inference from similar circuits.

This CBS-era schematic covers the 70-watt master volume variant shared by the Super Reverb, Pro Reverb, and Bandmaster Reverb configurations with the pull-switch boost option. Four 6L6GC output tubes deliver substantial clean headroom that the master volume allows players to tame to practical stage and studio volumes. The pull-switch boost engages additional preamp gain for crunchier tones.

• Years produced: 1974–1980
• Made in: USA
• Wattage: 70W
• Channels: 2
• Preamp tubes: 4× 12AX7
• Power tubes: 4× 6L6GC

Tags: american, clean.

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.