https://www.mqa.co.uk/

MQA Ltd is the company behind incredible music technology Master Quality Authenticated, or MQA.

Using pioneering scientific research into how people hear, MQA captures the sound of the original performance. The MQA file is fully authenticated, backward compatible, and small enough to stream, so you can play MQA on any device. MQA powers award-winning products and services worldwide with unmatched efficiency, which also makes it the most sustainable solution for the entertainment industry. Partnerships span recorded music, video, radio, broadcast and livestreaming. Wherever there is audio, MQA delivers the best sound. MQA is a UK-based private company.