Krell Illusions ii / Krell duo 300xd to a Gryphon Diablo 300 integrated an upgrade?

Audiotroy - thanks for the comments and recommendations - I’m in the North East, I’ll give you a call to talk through some options on a streamer / server.  
 

thanks, 

Thanks yyzsantabarbara - eery how similar our paths have been, similarities on what we’ve run for gear.

I love the Krell Amp - didn’t get a chance to compare the 300xd using the Krell Pre vs the CSiB as a pre with it.  My memory of the CSiB being used as a pre was I preferred it to the Krell but without being able to do a direct comparison, hard to tell if that would really be the case.  Called Coda and asked about the differences I would hear, jumping to the 07x - they said minimal if I was using the XLR inputs, that said, the 300xd sounds to my ears better using the XLR inputs - seems to be designed that way, had to use the rca output / inputs when I was using the CSiB as a pre.  
 

Have you tried any other Pre’s with the 175xd?  I’m toying with trying a tube pre but tougher to find balanced tube pre’s - some have them but not as common on tube gear. 

Thanks for the feedback Audio Intellect, appreciate it.

Would I need to upgrade my DAC as well?  The streamer you are recommending seems to be out of the DAC I have currently’s weight class.