I'm going to use the Beetah twenty twos speaker outs with the Duos in the in term.
Thanks for all the feedback guys, but I realized an in between amp would drive me crazy and it will be all that much sweeter when I get those 300B amps.
And I might get a chance to hear the B22 with some Duos, depending on when it's finished.
e: I still need a preamp (preferrably with remote, laziness ftw)