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

I might add that I just acquired these without listening first and at a good price.

Thanks to all for the responses!  I am using them with a Conrad Johnson MF2250A  120w/ch solid state amp, VTL TL2.5 tube preamp and predominantly BelCanto Dac1.1.   A first for me, recently the circuit breaker tripped in the CJ on Reference Recording  "Tutti"  cd.  It was very loud though, but they are inefficient.  The separation of different frequencies is impressive and I wanted a floorstander this size.  I still own the original Harbeth Compact 7 and the last version of KEF Reference 104.2 (bi-wire).
They sound good on everything.  One can say of course that the F32 is far more neutral but at what cost? 

I did try them briefly with my Manley KT90 Retro 100 amps.  I will try again. I thought less involving, less control than the CJ.

I might add that my Kef 104.2 have Morel tweeters.

The speakers had a brand new, just installed titanium tweeter.  They are sounding much better.  I think alot of the dry harshness that I was hearing was the tweeter not being broken in.

I have thought of Class D Bel Canto, Channel Island or other.  I might add also that I have switched around IC and speaker cables that I have and there is an improvement.

Marked improvement!   Tweeter break-in,  cable changes,  adjusting tweeter and bass settings on rear of speakers have made the Revels much more enjoyable!