Cujo,

You'll need a Meridian processor to generate the centre channel from the stereo input.

Also I think I'd wait until it becomes clear what M are going to produce to provide some of the MQA goodness to legacy DSPs.

Sooloos, Roon, G series (with LPS upgrade), 800 series (with LPS upgrade), HD621, AC200, Prime and PS, DSPs old and new.

Purdeys, Moke, Leica, 'Blad. Only the best.