If you ripped a vinyl LP to 24 bit FLAC, you don't want some app converting it to 192 kbps Opus behind your back. SugarSpin doesn't.
The server reads the original file off your disk and sends it bit for bit to the player. There is no transcoding pipeline. There is no quality slider in the cloud quietly stepping you down. A FLAC stays a FLAC, an ALAC stays an ALAC.
24 bit / 96 kHz masters? 24 bit / 192 kHz? Even 32 bit float? They pass through unmodified. The original sample rate and bit depth ride straight from disk to playback. Your hi res collection finally has a home that respects it.
When you cast to a Bluesound or NAD streamer (anything running BluOS), the speaker reaches into SugarSpin and pulls the raw file. It decodes the FLAC inside its own DAC. The signal path is your hard drive, then your speaker. Nothing in between gets to touch it.
Every file in your library is scored with a TT-style dynamic range (DR) analysis right on your own hardware. A new Hi Res tab groups your collection into Reference Grade (DR 14+), Audiophile, Balanced, Compressed, and Brick Walled tiers. The Mastering Versions page compares the multiple pressings you own side by side, so you finally know which copy is the better master. No cloud lookups. No subscriptions. The bytes on your disk, scored honestly.
Mix any of the above in your library and SugarSpin plays each at the format it was encoded in. No format conversion at scan time, no “optimization” pass, no second copy in some hidden cache. The bytes on your disk are the bytes that play.