I went from FPB 600s to ARC.
Depending on your budget, there is a wide variety to accommodate your needs and ARC tends to lean towards SS when it comes to bottom end control which is a real nice attribute.
I tried the VTL's as well and preferred the ARC based on the bigger model ARC I settled for. NO tubes will have that staggering control of what the Krells can provide but it was a compromise I was willing to take to fill the other avenues that the ARC provided. Good luck
Depending on your budget, there is a wide variety to accommodate your needs and ARC tends to lean towards SS when it comes to bottom end control which is a real nice attribute.
I tried the VTL's as well and preferred the ARC based on the bigger model ARC I settled for. NO tubes will have that staggering control of what the Krells can provide but it was a compromise I was willing to take to fill the other avenues that the ARC provided. Good luck