Has anybody discussed the use of tube adaptors in the WA22 with Jack Wu?
I know Mikhail sold tube adaptors for Singlepower amps and everybody by now should know he was a fraud. His amps also have failed at an alarming rate. Most failures probably resulted from poor construction, but it is possible that the use of tube adaptors he sold hastened their demise.
Since then, a number of people who understand something about tube amp design (Kevin Gilmore, Nikongod) have written elsewhere on Head-Fi that tube adaptors are a terrible idea and that one should only use the tubes the amp was designed for.
In the same vein, I know of no manufacturer of tube preamps or power amps for use in speaker rigs who has ever sanctioned, let alone recommended, the use of tube adaptors in their components.