I have been meaning to revisit and post an update on the Stereo Sound DSD 256 files, time flies… even expanding my search worldwide I still cannot find much info so hopefully posting here will do.
Of the four I bought, I feel there is a very clear winner, and it’s the Janos Starker Bach Suites For Unaccompanied Cello. This is the closest I feel I have come to what it would be like to listen to the tape directly played from the Studer A80 in the studio itself. I could go on about the how the cello is being played right in front of me, the warmness of the cello, the decay and separation of each note, or how articulate Starker’s playing is, but the real prize is being able to listen to all six suites in DSD without ever having to get up and change/flip a disc.
I like all four albums, enough that I decided to buy a fifth, Benjamin Britton conducts Mozart: Symphony No. 25 & No. 29. I am still a little puzzled these are so under the radar, maybe it is a combination of target audience, price and necessitating an import from Japan. They are not cheap, even with a weak yen these retail at around ¥13800 ($85 USD) up to ¥17800 ($112 USD) for Zubin Mehta’s Mahler No. 3 release, before any shipping/proxy fees. Perhaps most would-be buyers already have these releases on LP and don’t need yet another? 
If I were to rank them, I’d put in this order:
- Starker - Bach Cello Suites: no SACD to compare to, wanted to save space, no need to change the disc.
- Ansermet - Royal Ballet: no SACD, very close second, I no longer need to search for a definitive Swan Lake Op. 20, this one does it for me.
- Kertesz - Dvorak No. 9: Modest improvement over the Stereo Sound SACD, this release has cured my desire for the Esoteric SACD
- Mehta - Planets: I felt this offered the least improvement over the already excellent SS SACD. Still, very good in its own right.
Only thing left to add, this is obvious to some but these are my only recordings I feel must be played in their native DSD256 resolution, with as little processing as possible, to realize their benefit. Using Roon to do the down-conversion to DSD128 (over USB to my Directstream Jr.) causes the sound to ‘collapse’ a bit, it becomes less spacious feeling. It still sounds great, was just one of those ‘aha’ moments for me. I would love to listen to these recordings on a true 1-bit DAC like the T+A DAC200.
Playback chain: Macbook Pro (Roon Core) - router/generic cat6 ethernet - Holo Red > Dragon 48 I2S > DirectStream Jr. > AQ Water XLR > Holo Bliss KTE h/p amp > HD800S with UPOCC cable.
Bonus screenshot of the studio equipment:
Studer A80 Analog 2 track
A/D Horus Converters (worth keeping in mind these were all released late 2017)
Pyramix Workstation for post production.