The M6 is a full range loudspeaker that can be used in any position with any speakerlink equipped Meridian system.
So... If a pair were used with AC200 that would give you a stand alone system that could accept multiple sources etc ..in just the same way that AC200+ DSP3200 would do this.
However you could also use them (M6) with Sooloos, G61RSL or 861V6.
The design is simply a departure from the established DSP range, it is not meant to replace anything but merely to run alongside and slot into a price point.
They hope to reach a wider market with the M6 so that must be a good thing.
I've seen them but not heard them.
They look good ... but i don't know how they sound yet.
However there's some interesting technology in there and that should mean impressive results that could make this a very compelling choice.
I remember looking at one of the first F80's and think "how could anything that small and made out of plastic sound so good!"
Have faith folks, let's wait and see (hear)

Gerry

Meridian Partner & UK dealer since 200 series.
42 Broadwater road, Worthing, BN14 8AG 02380 228434.
www.phase3southampton.co.uk