Hello, I used to own the Cary 572 monoblocks. They sounded great, but I eventually sold them because It was virtually impossible to find the 572 tube at a decent price. It has been discontinued and only Svetlana made them. I did get a quote from Cary to modify the amps to accept other tube types, but they wanted $ 800.00 for the mods...I think Cary should offer a moderatly priced modification on these. All of us who paid dearly for the 572 amps are left with little choice but to bite the bullet on affordability. Furthermore, I went through 2 sets of tubes in no time at all, as I found them to be unreliable (maybe it was the amps who knows). As I said, the 572 sound nice, just make sure you have the cash to put up with the 572 tubes that are becoming rare and expensive. I'll take the mundane and inexpensive EL 34, KT 88, or 6550 tube any day over the 572. Not single-ended designs, but close enough...Funny thing, these amps never sold for more than $ 1,100- $ 1,200 tops in the last 3 years on the used market, when the tubes were readily available. Now all of a sudden, I see some listed for $ 1,600 !!! What's the catch here, it's actually HARDER AND MORE EXPENSIVE to get these discontinued 572 tubes ? Why pay even more than before for all this trouble?
Good luck !
Good luck !