@donavabdear , the Lyngdorf Class-D is either off the shelf Purifi or customized. The brains is Bruno and Lara who started Purifi with Peter. Those are Peter's words by the way. Class D is almost a technical necessity for the bass due to high power in active, but for mid / tweet, not essential though a switching power supply becomes a packaging requirement. In professional products no one asks you what's the power supply. They only care about the sound. In the home market there are a lot of preconceived notions. There are also a lot more single ended electrical connections more susceptible to noise.
That Meridien system was nice. Not a fan of the room and lack of treatment but they have to work with what the customer allows. They dropped the ceiling though, so could have created a 6" fake acoustic wall. All digital interconnect. Just standard Cat6.