Best monoblocks around 3-4k used for revel studios

You'll have to consider the VTL 450's but they might be just a bit more $$... Intense, dynamic,robust but eloquent, and reliable... they are awesome amps. A good pair will probably run you near half of their $10k list. Well worth a listen.

What is the advantage of the mono iceh2o amps over the stereo h2o and has anyone tried them on anything other than Apogee speakers?
The specs are the same on the stereo model, I'm thinking there is not much difference between it and the monos.

Drop that question to Henry Ho. I have H2O Signature monos, so I couldn't say. That model will be on the H2O site soon.

Check this out:

http://forum.audiogon.com/cgi-bin/fr.pl?vevol&1081651970

Rowland Model 201s or the H2Os. These new amp designs are quite wonderful.

2nd the VTL 450 signature