The only matched tubes I tried in my 3322 were a pair of WE403Bs. When I tried them against a pair of unmatched 403Bs, the was no aubible difference between the two. I haven't had any matched 6S19Ps in my amp, though they're made to very high tolerances, so they'd be technically similar anyway.
post #301 of 451
3/21/10 at 10:26am