I just discovered this section of this website, so I might as well jump in with what is on my platter at the moment.
Antiphone Blues - Arne Domnerus on solo alto sax recorded ina large church in Sweden accompanied only by a large church pipe organ. Proprius label, recorded in 1975
I never get tired of listening to this recording, with the volume turned way up. It is the best recording of smooth, lyrical sax playing that I have ever heard. A wonderfully recorded album.
Prior to that I was listening to Perez Prado on the 1958 album "Prez". Every time I listen to one of these late 1950's RCA Living Stereo discs I am simply amazed at the quality of the recordings. This one has a ton of wailing horns and all kinds of bouncing percussion on these wonderful mambo songs.
And before that it was Symphonie Fantastique, by Berlioz with Kojian conducting the Utah Symphony. This is a Keith Johnson recording on Reference Recordings and was issued on 12" 45 rpm discs. Amazing dynamic range on this uncompresssed recording. The symphony only took 3 sides, so they repeated the 3rd side music again on side 4. These last two movements are the most exciting parts, and the producers figured that listeners would play them the most.
I like all of these at volumes approaching live levels, as they are such clean recordings.