Vandersteen actually make ( for years now ) 2 different amplifiers and soon a preamp…
The M5 monoblocks are all SS and have a host of very unique features you can learn about on the Vandy website. The larger M7 which i’ve been blessed to live with in my reference system since inception are a hybrid w tube front end and liquid cooled SS drive. Both amp models incorporate HRS isolation. The control and protection circuits are all analog. Both incorporate hi-pass filters and 128 v DBS.
I use a tweaked REF 5se to drive the M7. @erik_squires stop by any time….