And what is a 6CM6 but a 6V6 in a miniature envelope with a Noval base?Yeah -- the 6V6 is kind of the... I dunno... Mazda 323 of output tubes.
Gets no respect, but it's absolutely competent and it gets the job done with great aplomb.
There've been a couple of PP and SE 6V6 amps here (past & present, come to think of it) & they're perfectly dandy.
... and what is a 6AQ5, Grasshopper, but a 6V6 in a miniature envelope with a 7-pin base?