Bi-wiring will with good cables will help with the bass response. However, I would guess you are under-powering your Totems. I auditioned the Forest's and found that 120/per side(SS)was about the minimum. I'm not that familiar with tube power amps, as I have only used tube pre-amps in conjunction with SS power amps. Replacing an amp is usually easier said than done, unless money is not an issue. You should try to audition your Totems with something quite a bit beefier (SS or Tube) then make your decision. Perhaps you can get a decent trade at the dealer you purchased your amp through. I'd try that before making any online transactions.
Good Luck
2chnlben
Good Luck
2chnlben