SOLID STATE RECTIFIED AC50s
1965
4. Triumph-made
Serial nos in the 2000s
5. Burndept-made
6. Solid state rectified
Serial nos in the 3000s
Details of a Mk 3 chassis
Serial no. in the 3000s
Brimistors
From Oct. 1965
7. Solid state rectified
Serial nos in the 4000s
AC50s with reverb
Various serial nos.
AC50 reverb unit
Made by Thomas Organ