Hi Fini
Thanks for you comment. Yes i just found some comments about the Pilot SA-232. This must be a very interesting amp. i already contact the person who is selling it.
Someone contact me in this forum via PM who is selling a pair Fisher 30-A for 600$, but i don't know how the condition is. i will find out soon.
To look for a Fisher 510 ST is also a good idea. I will keep this thread updated whats happening. Thank you very much for the advice so far. For me it is a new interesting
subject the world of vintage American Amps. I have the feeling not too many sound enthusiast here in germany are into this..