Charles Mingus "Mingus Ah Um" Mobile Fidelity Lab
I listened to this SACD again and I have to say. . . I wouldn't change a thing about the sound. This listen made me clearly realize how amazing the original engineering was for this record--the engineering tells the story of the arrangements and soloists and the ebullient leader and his direction. The tonal balance, the resolution that resolves the direct and ambient sound, the dynamics. . . this is a great sounding disc.
And I have listened to two more of the 80th Anniversary CDs from Blue Note Japan, Lou Donaldson's "Lou Takes Off" and Donald Byrd's "Blackjack." Both sounded very good.