Technically it is the system that makes the recordings shine. Or should be.
But I get your drift, and with Roxy Music we are off to a good start.
Sinatra-Basie for incredible vocal presence.
Jennifer Warnes The Well (the limited 45) for incredible lush liquid luxuriousness.
Tom Petty Southern Accents for dynamic audiophile rock.
Ellington Jazz Party (the 45) for kaleidoscopic live jazz. The percussion on Maletoba Spank will knock your socks off!
From the Age of Swing on Reference Recordings for superbly recorded orchestra.
Janis Ian Breaking Silence, for superb pop/rock that is all analog, with a couple recorded live to two-track.
Michael Ruff Speaking in Melodies on Sheffield, just superb in every respect.