Pass labs krell parasound amps


Hello, Looking for feedback on the best sound and reliability of these amps, how do they compare to one another. Looking to spend 5-6k on used amp from these choices: Pass Labs x250.8, Krell Duo 300xd, Parasound jc5 or Mcintosh Mc312.

I have Mark Levinson no526 preamp and Revel 228be speakers and like a very open, transparent sound with deep soundstage. 

Thanks for your response. 

lnitm

Thanks for the input. I think I have narrowed down between the Pass Labs x250.8 and the Simaudio Moon 870a as both have great reviews and power range I'm needing between 250-300 wpc. Although the Mcintosh is interesting.  

@dcclone Krell = Krona?

I am very happy with my old Krell KSA-80 which has needed a couple of repairs over the decades.  Class A with no power saving gimmicks.  Good room heater!

An extra thousand should get you a X350.8 used if not a bit less but when the deal pops up it will go quickly. Many have reported the 350 superior in many ways to the 250. I have the 350

Piebaldpython. I don't think my rack will hold the weight of the 350.8 or it could be an option. Thanks