Hi! Few years ago I played some small 1x15" 150 W H&K combo and loved it's sound! Now I'm looking at QC 421 (and would probably add a 1x15 box to it), but listening to some samples on H&K site, I started warrying that it could have too much of a Rock sound for what I want. And I want something like an all tube SVT if possible. Nice and warm R&B or Funk sound! Anybody heared QC421? Cheers!