Hi, can someone tell me what the differences are (if there are any) between the 2000s and the 350b heads?
Also, it's my understanding that kt-88s were used early on, then Sunn made the switch to 6550s. Is that correct? If a 350b has kt-88s, has it been modified to accept them?
Lastly, what is the going rate for these heads?
THANKS!