Stock work well in mine, but I'm using Genalex Gold Lion KT88's and haven't had any problems. Always keep a spare matching set of tubes for back up. If one of your outside tubes went # 1-7 or # 2-8 you may have a cold solder joint out. People don't give this amp the credit it's due. It's a great amp especially hooked to the SLP98P. If you go with KT120's call Cary to ask what to bias them at. Good luck.
Tube recommendations for Cary Cad120s
Hi everyone i just had my first tube blow on my cary cad120s got it replaced with the same type of tube. Though wondering should a guy get the hole kt-88 set changed? On top of that any suggestions for tubes for the cad120s. I am leaning towards kt-120 which is what cary recommends? But just with my budget right now leaning toward the stock elector harminox kt88s if there any good. What are your thoughts