Vox Solid State
Vox Super Foundation Bass, 1967-1972
JMI Super Foundation Bass
Serial nos c.1001 - 1300
Serial no. 1090
VSEL SF Bass
Serial nos 2000 - c. 2300
VSL SF Bass
Serial nos 2300 - c. 2700
SF Bass cabs
Details and pics
Circuit diagrams (schematics)
The RCA 2N3055 transistor