@dynacohum Don't know where you're coming from ...
Actually, I do. And I love the Zappa punn in your user name.
I was going to write almost exactly the same letter, but you beat me to it. I also read the long and detailed Keith @ Darlington Audio history, waiting for him to reference Tom Holman and Henry Kloss. It's like a whole arm of phono preamp history was just left out. The Advent 300, NAD 3020, APT Holman Preamp, and Marantz 3250 Preamp all shared Holman's insights and secret sauce making them among the very best phono stages available around 1975-80.
He does mention the HK Citation 11 & 12, a great middleweight pairing. One system I helped a customer build began with an Advent 300, Large Advent speakers and Thorens TD-160 / Ortofon VMS20 cart. This was what his budget allowed, and he wanted a clear upgrade path. 6 months later, he added his Citation 12 power amp, and 6 months after that, he swapped his Advents for a pair of ADS L810s. He later tried a Citation 11, but decided it wasn't a significant upgrade from The Advent, and he'd miss the local college FM, so he upgraded to an Ortofon MC-20 and matching transformer. That was a sweet sounding system.
I personally owned the NAD 3020, Marantz 3250 (which I sadly sold in a moment of financial desperation), and later, an APT. I kept the APT, and recently had it rebuilt and upgraded. It remains one of the best preamps I've ever heard, and ith unmatched flexibility.
Maybe Darlington Audio could add that missing chapter to their otherwise impressive history. Tom Holman did, in addition to his contributions to phon preamps, win an Academy Award for his development of the THX surround sound technology.