352.8 khz and MQA titles on Deezer.

Using Deezer Hifi because of my Highend equipment I was very amazed when I was streaming some albums from the 2L label,  mostly classical and choir. Normally it's the usual 44.1khz but suddenly... 352.8 khz!  And also MQA !! . Switching back and wordward to other albums( checking  the system wasn't cunfused) every 2L album gave the same highend results.

Dear Deezer,  what's going on???  

Thank

Jakob