I think what Positive Feedback stated holds true for what I have heard from the Rowlands, Bel Canto's, etc., and obviously the H2o they reveiewed as well.
What they reviewed was the "entry level" H2o Stereo for $3K
That is not the amp I own, nor the sonics my pair posses. Thus the price difference, as well as the 6moons much more favorable review.
I am certain the Signature Mono's sound a LOT better, as I heard the standard mono's as well before purchase.
Drubin, I am not trying to beat any dead horse. I myself was thankful to come across the H2o off of a thread here on Audiogon, as they do not advertise everywhere, and I had heard other digital amps that left me wanting more, and much along the lines of the sound described from the Positive Feedback article Tvad linked.
For those out there searching for an "overacheiver" at a certain price point, I can assure you the H2o Sig Mono's put the Rowland 201's to shame. I will also go on the record to let you know I was biased. I WANTED the Rowlands. I LOVED the looks. Phenominal looks, gorgeous, cool, must have. However, the ears won... I have the industrial boxes, that sound much better. IMO...