I’ve owned an MA6500 used with Olympica I’s and it was an excellent combination. Not sure I’d use the MA252 with the Olympica III’s, at least not without some major demo time at a dealer. I’m currently running the MA252 (and a PS Audio DSD) with a pair of B&W 706 S2s and a Sumiko S.5 sub. Again, an excellent combination. The hybrid design of the integrated has been beautifully executed by Mac, and the build quality is classic Mac as well. I first experienced a hybrid design in the PS Audio BHK250 power amp whose performance is truly amazing!! But at 82 lbs., it was a problem for my 68 year old back. Nevertheless, refusing to admit my limitations, I was about to add the PS Audio tube preamp to my system when Mac introduced the 252 integrated. Influenced by pain (or pain pills), I decided to give it a go. While I LOVED the BHK250, I have had no regrets going to a less powerful amp. I’m still getting tube goodness in my system and at only 27 lbs. As with any piece of gear, matching is critical. Cheers.