Krell XD technology


Interesting article at Stereophile regarding Krell's XD technology:


https://www.stereophile.com/content/krell-k-300i-integrated-amplifier-sonus-faber-olympica-iii-louds...


I quoteth it thus:


The key insight, which Goodman told me was discovered in the course of developing the K-300i, is that "lowering the output impedance below traditional norms" results in "substantial sonic improvements."


With 0.035 Ohms of output impedance, this would be a damping factor of around 230. I'm curious for two reasons:


  • I have seen evidence that SS amps are more susceptible to impedance variations than we think, and that this accounts for some of the changes we hear in speaker cabling.
  •  I wonder if it's something besides better feedback, and they're just afraid of calling it that?


I'm not a Krell fanboy, haven't heard them in decades.  Just saying from a tech perspective this was an interesting read for me.
erik_squires
Does Parts Connexion respond to emails?  I emailed them a while back to ask about mods they did on a piece I had.  They refused to answer me.  I called them twice and got the runaround, said the "owner" would call me back and never did.  They simply refused to have any communication about mods they did.  
The fuse is available just remove screws in cover the Synergistic blue fuses are 30% off now at parts connecxion  for $80 vs $120,, the new orange at $160
is a rip off a hair better at 2x the cost
Has anyone changed out the fuses on the Krell? I see they are not accessible from the back and would require opening her up.
Or is that all hype?
Appreciate any input.
I have the Digital Vanguard and although I don't understand a lot of the specs this amp is amazing for me. I have had Parasound for years and am sorry I ever put money into it, just lackluster compared with the Krell's performance. Open dynamic and musically stunning in my opinion. My older Vandersteen 2ce's have never sounded so good. I believe it probably comes down to system matching and integration. I'm playing with interconnects and cables now and having a blast!!


I got a Vanguard when they first came out  I still love it!  I’ve had all the big name separates, but the Krell sounds amazingly warm and dynamic.  I’d be a little concerned that the new 300i might be too warm and cuddly for my taste.