What players can be Co-star paired with a Strato player?

Only M-Class players (KPLAYER-M300, KPLAYER-M500, KPLAYER-M700, Cinema One 2nd Gen or Kaleidescape Alto) can be paired with a Strato player. 

Please check the below link for further system pairing information. 

https://www.kaleidescape.com/support/article/Kaleidescape-Co-Star-Installation-Guide