Best ICE-powered amps ?

I own the M501's and can't imagine wanting anything more. These are outstanding amps and better than the older eVo amps I used to own.
Can't compare to any of the others. I would suggest that the Red Dragon and Rowlands would both excel.
Interested in the REf 9SE but would be concerned about the noise they generate, especially since I have FM in the next room and SB3 in my mian rig.
Bill

I personally have found the H2o Signature Mono's to better the following (by audition)

Rowland 201's
Rowland 501's
Bel Canto Evo (202's?)

The H2o Audio has an in home audition.

Anyone whom is interested in this technology, I would strongly urge to audition the H20, the Rowland, the NuForce, and you will hear with your own ears, there are significant sonic differences.

The above is a good example of why you shouldn't carry on a conversation with the wife in the other room while trying to post at the same time...

I meant to say the H2O Audio amplifiers offer a 30 day in home trial...

I would also encourage anyone whom is interested in this technology to audition more than one or two, as there can be great sonic differences.

I'm using the Ice H2O to drive my Maggie 3.6s with satisfying results. With a high damping factor, it controls the panels, particularly the bass very well. As with many digital amps, the clarity and detail is amazing. The H2O replaced a pair of Rogue M-120s in my system and I think that is great testament to the H2O product. I will say that the H2O did not quite have the body, weight and fullness that the Rogues did, but it was not enough of a difference to outweigh the benefits it provided. Delivers an engaging and liquid midrange, an extended but smooth top end, and a very taut and deep bottom, all with ease. I highly recommend a trial demo if you can swing it and hope you get a broken in model as the break-in period is annoyingly long. Good luck on any of your choices.

FrankPiet, it is worth remembering that the top of the line Rowland amps, the 302 stereo and 301 monoblocks are also ICE powered. You may want to look at them as well. The 302 used in particular may not be terribly more expensive than a pair of new Red Dragons.