I have to agree with all pf the OTL recommendations (Atma-sphere, Joule Electric, etc.)
I have a Graaf GM200 that I intend to take with me to my grave and have two replacement sets of the PL504 output tubes (64 in total) stored that I will need to get me there... A truly special amp!
I have a Graaf GM200 that I intend to take with me to my grave and have two replacement sets of the PL504 output tubes (64 in total) stored that I will need to get me there... A truly special amp!