I was lucky enough to audition the Krell K-300i & Duo 300 xd. Both are fantastic paired with my speakers, Alta Audio Alec’s. I have a Primaluna Evo 400 integrated and a Coda CSib Integrated as well. The 300i beat out the other 2 integrated amps. The Coda is a beast as well, I preferred the slightly sweeter, warmer sounding Krell to the Coda but think when comparing the 2 would be a toss up, come down to personal preference to Krell or Coda’s sound signature. The duo 300 xd is the best amp I have ever had in my system. I ended up buying the 300 xd. I’m using the Coda as a pre for the moment, couple steps up from any integrated amps I’ve heard.
Both Coda and Krell where very accessible, they’ll talk to you about their products. I’d highly recommend both brands if someone is looking for amps amp and or an integrated.