Burt van der Wolf's label is 'Challenge Classics. our member
@Audiocrack started a
thread about it 10 years ago. it's a good place to get more info.
Spirit of Turtle is where you can find the downloads for the files.
here are a few i play often. not found a dog yet in any of these from this label but some music is an acquired taste like anything.
Bruckner Symphonies #1, #6, & #8. all Jaap van Zewden; i own both the dxd and 256dsd files on all three.
Beethoven Symphonies #2 and #3, #4 and #6, #1 and #5, #7 and #8, #9 all JW de Vriend; i own both dxd and 256dsd files for all 5.
Prokofiev Symphonies #1 and #5, #3 and #4, #6 and #7. and by James Gaffigan, also own both dxd and 256dsd for all three.
also have all 5 of the Beethoven Piano Concerto's; Hannes Minnaar, JW van Vriend.
obviously all ultra epic pieces and i can go to these anytime for some superb musical enjoyment. they never fail.