Best amp for natural timbre of unamplified acoustic instruments & vocals w/ Revel F32?

Terrible advice to get rid of the speakers . No speakers are designed to sound like what you are describing . Look elsewhere in the system . Start with your preamp . A personal experience last night . My system sounds fantastic .Couldn't be happier . Decided to buy a Krell preamp off craigs for the fun of it . Installed and my speakers are describing what you described . The Krell just does not fit in with what i got going on . Keep at it and good luck to you .

Fyi . I own a pair of Revel f30's and i find them flat and dull sounding next to my electrosats and rarely listen to them .

Gamut 200i or Hegel H30.

Maplegrovemusic,
Yes I would find it hard to believe that a speaker would be intentionally designed to sound as described. On an open forum we can only respond to the information provided. If the OP has determined the speaker is the weak link then it's reasonable to suggest that another speaker may likely improve his situation. It could certainly be the fault of another system component or issue,  it also could be the speaker as the OP suspects. I do hope that he solves the problem to his satisfaction. 
Charles,