True Studio Masters i.e.Sound Liaison, Blue Coast,

Sound Liaison and Blue Coast records are selling one to one Wav files or dsd copy's of their Studio Masters.
I find the Hd tracks a bit vague on that subject.
Of course the Sound Liaison and Blue Coast recordings are straight from the Recording Studio to the consumer,like buying milk from the farmer,not pasteurized,and I think the quality of their products prove that point.It is quality above quantity so to speak.
Where do you buy your one to one copy's?