I believe it is a MS600. I will use it with my QNAP as a Meridian endpoint for both my 8k's and whole house audio then I will switch my 8k's to the 861 successor when it comes out.

Sorry, now I see the confusion. I have a separate analog 12 zone whole house system and will be adding the MS600 as a source.

Main: 800 with LPS, 861v4, 818v3,8000.1SE, 96/24-6k C, 96/24-5k sides, DSP33 rears, M2500 + Velodyne 12", QNAP-MS600, Ruby, PS3, HD621, Oppo.
Games room: G68J, HD621, M33's front, analog ceilings rear, Velodyne 10"
LR- 6k 24/96, MS200, 800 with LPS