Friday, November 4, 2022

Building a tube amp Fender Champ AA764 model copy

 It is a fender AA764 copy, with some mods: 


- Solid state rectifier (FRED diodes)
- Standby switch
- NFB pot and switch
- Two Fat switches
- One Bright and treble tone cap switch
- Master Volume
- Coupling cap value 6x switch (before the master vol pot)
- 6V6 Tung-Sol and 12AX7 Tung-Sol
- Orange drop capacitors
- EL84 paralell tube socket option (not tested). * Using one or another (6V6 or EL84)
- Presence switchable control
- Mid control
- TMB turn-off switch
- GB128 speaker

** AA764 is a 5F1 with TMB tone control and a little diferent NFB.



champ - aa764


Pictures:


champ - AA764

champ - AA764

champ - AA764

champ - AA764

champ - AA764

champ - AA764

champ - AA764

champ - AA764


champ - AA764

champ - AA764

champ - AA764

champ - AA764

champ - AA764





Optional EL84 socket:


EL84 vs 6V6