o.k anybody know anything about shm-cd they claim there indistinguishable from the master?

Google is your friend

@larry5729 https://www.cdjapan.co.jp/feature/shmcd_allabout

I believe  that's true some are good and some are not .The mastering ,recording ,the engineering  used.

For whats it's worth I have 4 of their cd's and play them consistently. They just sound better to my ears than any other cd's I have ever owned.  Especially  Bill Evans "Waltz for Debby". I can actually hear background  conversation, a bit distracting, and glasses clinking. Also I never get tired of "Getz/Gilberto"  circa 1964. 

I have a couple of SHM's that do sound better, including Black Sabbath Paranoid.  Also excellent are Sony's Blu Spec CD's and Blu Spec CD2's which are made using Blu-ray machinery and laser processes.  The thing to do is try these in your system particularly if you can find some music you like that you own on regular CD's as well.