There is new Hi-Rez audio format avaliable - MQA - Master Quality Authenticated Have anybody looked deeper into this to confirm is it some kind of drm? Since flac is bsd licenced there should be no licencing issues. I have heard rumors that if flac file contains pcm data with mqa watermark then it can be unpacked but mqa data is lost and mqa capable hardware cant decode it, since I don't have mqa capable dac I don't know is it true or false. I don't know is special playback software needed for playng flac with MQA data. Here is screenshot that I found from this article https://mrapodizer.wordpress.com/2015/01/13/mqa-what-is-meridian-hiding/ Screenshot - http://www.avsforum.com/forum/imagehosting/755309554b2aea525fc8.jpg Some test files - http://www.2l.no/hires/ Marko