How much is about the recording

Big deal to me. Fortunate to have an acoustically treated dedicated listening room. Figured out the setup. Now it's all about the recording quality. I grade every album I hear A,B,C,D based solely on sound quality.

In my collection I'm hearing about 10% class A, 50% class B, 30% class C, and 10% class D.

@oddiofyl Exactly! 

@skyscraper Class A- Dire Straits, Steely Dan, Chris Isaak, Norah Jones, Supertramp, Moody Blues, Jeff Beck, Pink Floyd, Andreas Vollenweider, Cat Stevens, almost any jazz or classical album

Class B- Genesis, Heart, Eric Clapton, Roxette, Talking Heads, David Bowie, Queen, Led Zeppelin, ACDC, Rolling Stones, Alanis Morissette, REM, The Cult, The Black Crowes, Billy Joel, INXS, Aerosmith, U2, Brooks & Dunn, Donnie Iris, Tom Petty, Bob Dylan, The Who, Klaatu

Class C- Jefferson Airplane, Ted Nugent, Procol Harum, The Mamas and the Papas, Little Feat, Roy Orbison, Lynard Skynard, Ramones, Uriah Heap,  Faces

Class  D- Robert Johnson, Chicago Blues, Leslie West

This list is a guideline. There are some songs that sound better (or worse) than the overall grade for the album.

PS- my ratings are based on sound quality only, not artistic or musical quality.

I have no problem enjoying a class C recording as much as a class A recording.

@russ69 I hear what you're saying. I've thought of adding an A+ list of the recordings that are truly incredible.