: This is the version most commonly circulated online but uses for gain stages, whereas older combos use discrete transistors.
This schematic is frequently used as a reference but differs from combo models. It replaces the "Bright" switch with a "HI-TREBLE" pot and uses op-amp-based gain stages. jc-120 schematic
These models feature stereo FX loops and modern component layouts. Their specific Circuit Diagrams can be found in newer service manuals. Official Schematic Libraries : This is the version most commonly circulated