nuforce Ref 9 SE V3 vs wyred 4 sound STI 1000

I have read comparisons citing the Wyred to be smoother on the top end than the NuForce.

Early NuForce amps had serious RFI problems that is, FM radio in the building could not play when someone turned on a NuForce amp. From what I understand, that problem was quickly 90% to 95% fixed by a design change but I wonder whether it was ever 100% fixed.

I'm testing a Wyred 4 Sound STI-500 integrated in my home and there is no RFI problem at all.

So I am left wondering whether class D is prone to RFI problems or merely some early implementations?

Art

Have yet to hear the Wyred.

I had an RFI issue with my PS Audio HCA-2. A small Sony clock radio exhibited interference while the Parasound tuner, which was shelved just above the HCA-2, worked fine. After upgrading the AC wiring to my system the problem was solved. My initial version of the NuForce 9 Special Edition's and upgraded version 3 9SE's posed no RFI issues.

My system became less forward with a much deeper sound stage and simply more musical with the upgraded version 3 9SE's.

Art, interesting, which one do you prefer, the W4S STI-1000 or the Cary SLI80?