OK so I put my ears right on the back speakers, NO sound !!! So it's STEREO BUT :
I switch off the back speakers too and it did sound again multichannel on the beginning of the last track (at least). From the beginning track 1... it's not obvious, though you do have a depth feeling from front to back speakers.
MAYBE it's a sort of VIRTUAL surround recording, sort of QSound...
Anyway it's a VERY good sacd, specially if you like the Tangerine Dream soft ambient days, spacy trippy electonic psycedelic.... music. Then a MUST for even the multichannel ONLY "collectors"
Is this a prelude to VIRTUAL surround, QSound... STEREO sacd. Interesting thought !
THANKS
Thanks too to kal, Key, El Quapo for helping