Hi,
I've been buying tube amps / preamps recently and while there are solid state preamp tube replacements (retrovalve and amt) there are no solid state tube power amp replacements (EL34 or 6L6). Why? Years ago AMT announced they were working on them, as well as the designer of the Retrovalves beforehand, but nothing has transpired. Is the technology that difficult? I think this product is imortant because if tube factories close down or if the "west" has geopolitical issues with countries that make them (russia, china, eastern europe) guitarists may be in a shit spot. Any technical bottlenecks you folks may know about?
Regards ...