Ckoffend: I have always been of the same mindset as you on the matter but I am interested in the opinions of other folks that have upgraded. I hope more will respond.
I am not saying that a PC change cannot improve the performance of a Krell amp. In all likelihood it is just as likely to improve the performance of a Krell as many other brands. Just conveying Krells position on this. This topic is covered in several other threads that you may want to check out that may have more commments alredy posted. FWIW, my Krell dealer suggests that I replace my Krell PC with Transparent for a noticeable sonic improvement!
If you have a captive cord and don't know what to do about that problem, consider changing out your Krell amp fuses to Hi Fi Tuning fuses. I was tremendously happy with my 1 amp fast blows on my 350 mcx amps, (2 each amp). Amazing.
If someone can tell me how to remove the captive cord, I would give it a shot.
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