Most of these MFSL and other half-speed master discs are also pressed onto 'virgin' vinyl, meaning that no reground 'bits' are present in the vinyl, which would cause ticks and pops. There might be other quality control measures as well, such as less discs being pressed off of each mother (negative disc mold), etc.
They do sound fantastic and are well worth the extra $$ if you're a true vinyl entheusiast!
Jubilees in the Gallery
Khorns on standby
LS (cane grilles, custom DeanG networks, making them some of the sweetest sounding LS on the planet) CW/ KLF-C7 Hearth Room HT
forte II home office
icon WB 14 bedroom
KP682/362 w/ KSM2, KSM12II PA system
MCM 4 way restored / K201 - Workshop
LSI-BG split x 5 / KP250 outdoor HT
KP301 'truck' midi sized PA
KP262, KP110, KP172, HIP - extra pro stuff
KP600 system being slowly restored
RB5II Oak, HOO (cane), HBR, HD reveneered walnut - just laying around