So how do they make/mix an SACD?

Either from an original DSD or DXD master recording or, in the case of old titles, by going back to the original analogue master tapes and making a DSD master from that. As with the recent controversy about 'upsampled' high-res audio downloads, there was a spate of SACDs allegedly upsampled from CD masters in the early days of the format, but that seems to have stopped these days, at least AFAIK.

Thanks Andrew,i know(from a previous thread) to look for DSD recordings,bloody expensive tho,but i would guess there is alot of extra work in producing compared to a  cd mix.

Well, they don't have to be DSD recordings – there are some very impressive SACDs made from much earlier analogue recordings, such as the old Mercury Living Presence recordings from the 1950s, some of which appeared on CD in the old three-channel stereo system.

I'm looking to find some 50's blues,jazz and rock-a-billy,was put off by the non dsd tag,hmmmm perhaps i should re-visit,