Henry knows his H2O has gone up against the JC-1. One thing to remember, the JC-1 hangs on to a class A rating only to the 25th watt. My former Pass X600 was good for the first 150 watts.
The H2O puts out 45 amp. of current. That is considerably more than most other amps. I have heard digital power supply ICE based amps, and they are not to my liking. To my hearing, Henry's amps have more solidity, and deep depth.
I'm running his $5500 Signature monos on 1 ohm Scintillas. Everyday I get a WOW factor. That's because of the exquisite music recorded. I get to hear it in all it's glory.
I use to yawn at classical quartet recordings. Not because I don't like them. I have been to scores of live classical events. Now, thanks to H2O, I can hear all the subtle bow turns that breath life into every note. I am buying every well recorded quartet disc I can find.