I owned a KSA-50 (Serial #5) that I bought from Dan in 1982 at the LVCES. The output transistors failed in 1990. I replaced the Motorola units with RCAs. As far a other parts, these were off the shelf. The power supply caps need not be matched, IMO. You should be able to obtain all parts from...
I have heard good things about this Forum and I would like to introduce myself and our company, Cabledyne. We are a direct sales manufacturer of audiophile cables offering excellent product quality and value. I look forward to participating in the Forums.
Ed Bowman
Cabledyne
www.cabledyne.com