I had the opportunity to attend this event. It was a nice evening with good food, music and information. MQA was presented by 3 members of the M team and included music played through a pair of DSP8000SE speakers. The music was played using a C15 along with an 818v3.

There was a QNAP NAS in the mix also. As I am not a Sooloos owner yet I am not totally familiar with exactly where the MQA files were stored (and I didn't think to ask as I had other questions that were more important to me).

I have to say that every MQA selection was excellent. I was particularly impressed by an old digital recording by Dire Straits (money for nothing) and another song by Blake Shelton (not sure of the name) that was recorded when CD's first came out in the early 80's. With MQA these older recordings sound incredible. In addition there were also some recorded tracks in MQA by Robert Silverman (a world renowned pianist who was in attendance) that sounded like he was actually playing live in the room.

In another room there was a computer containing MQA music played through the M prime amp with a few different pairs of headphones. I am not much of a headphone person but the music through the Audeze headphones (not sure of the model number) was very nice and almost made me want to buy a pair ( I'm sure the MQA music files helped).

It was promised for those in attendance to receive some of his recordings in MQA but that is being delayed (to be sent at the time the 818 v3 is available).

Ken Forsythe from M stated that some more announcements will be coming in the near future as to more very familiar companies that will be on board for MQA support (IMO reading between the lines it seemed that there are some big names involved).

I also asked the M staff about the future of Sooloos software (as I am considering buying into it) after the Roon split off and was told that there will continue to be great support and updated software etc. from M directly (I also got the feeling that some new Sooloos hardware may be coming but again that's pure speculation on my part).

As far as MQA I am expecting to be able to use it with the new version of the 861 and I was told that new version will be a larger upgrade than just MQA (probably M's version of DTS X and Dolby Atmos I'm guessing)- but will have to wait until at least the fall.

Sounds like some exciting times to come - can hardly wait.
If you haven't heard MQA I would highly recommend auditioning it for yourself as it is amazing.

A big thank you goes out to M for a great presentation and Audio High for hosting it.

My gear: Trinnov CI, 271, 8000.1(SEs), 7200.1 HC (SE), 320s, 3200s, Seaton F18 subs, MS200 (2nd zone), 218, 210.
Other: JVC RS-4100 projector, Lumagen Pro Radiance, Panamorph DCR anamorphic lens, Stewart G4 130 screen, Kaleidescape Strato K, Rvolution 4K player and Zapitti NAS, Oppo BDP-203,Roon Nucleus