McIntosh MC-30's, MX110 tube discussion. Perfect 6U8, 12AX7, tube? See post #43 for Steve's input.

Just picked up a mx110z and found a sleeve of 5 RCA 6U8A's on the bay for $32 shipped. Anything else I should be keeping my eyes open for, or are the rest of the tubes in here good for a while?

It was out to Audio Classics in 2021, but not sure how many hours on it since then.