Best ICE-powered amps ?

Thanks for the comments. Unfortunately H2O is not a common brand in Germany as well as NuForce. Try to get a pair of 501´s and BelCanto Ref. 1000´s for an audition.
The 302 is too big for my rack - unfortunately as I like the looks and the build quality of JRDG gear a lot - whereas customer service at least in germany is just average.

Elberoth: I´ve just had JRDG 501´s in my set-up alongside with NuForce 9.02, Pass X 350.5 and my private Ayre V-1xe.

I must say I currently lean strongly towards my Ayre (probably it doesn´t need a replacement ?). From the others I preferred Pass to JRDG which was better than NuForce.

I was told the new Kharma Matrix 150 amp is a mighty fine amp driving ceramique speakers. I´ll give it a try.

I like the Ayre more. Pass is good too but the Ayre gives me a more easy listening experience. I was told to try Edge Class D amps as well but I´m not that convinced as I´ve once had the chance to listen to a shoot out between Edge NL 12.1 and Boulder 1060 and the Boulder was by quite a big margin the winner to all auditors and I find the V-1xe quite close to the 1060.

Elberoth2: you might be right and I must honestly say that I did to much equippment swaps and shoot outs this year and that I´m worn out doing more listening sessions.. I finally always return to Ayre gear (as I can´t afford the very expensive Boulder amps I like most - followed by Ayre gear).. And I´m very close to leave everything as it is and just add the forthcoming Boulder 865 into my system and compare it to my current pre-power combo and either sell him or keep him.