Performed some modifications on the Corda HA1 MKI for a friend.
Solens in the x-feed circuit, OPA637's, Cascode Jfets Class A biasing, Blackgates in power supply etc...
Pre-mods:
Just the opamps and buffers swapped. Along with Class A biasing.
The power-supply caps swapped out. Bridge rectifier changed to discrete Fast-recovery diodes:
Completed:
Another view:
