But it's still an amazing idea to have something that works both ways.
Techmoan did a whole video on it and at one point due to a glitch in the converter he found, the MQA CD starts jumping between normal 16/44khz CD quality to the MQA 24/356khz. You can hear when that happens and even he says there is a big audible difference in quality and prefers the MQA 356khz audio.
I don't want to turn it into a discussion that derails the thread, just thought folks here who love the CD format would be interested in this "new" format as brings them together with the Hi-Res audiophile nuts like me.