I'm running dual bridged Plinius SA100's with 350's. Combination might be a bit too laid back for some but that's the way I like it. Went through a few amps, including tubes but found bass integration a problem with anything less than the big behemoths. Rumour is that Arnie voiced them with ARC tube amps but don't know which model. Haven't tried the big tube amps like VTL 450's or Manley 500's but read that has been a good combo for some. If I win the lottery, I would like to try Atmasphere MA-2's, even though I have not been overly impressed by tubes so far.
The 336 should be fine.
The 336 should be fine.