High Res is to audio, what High Definition is to video. It is more lifelike and natural, and an altogether more enjoyable listening experience. With features like Master Quality Authenticated (MQA) the D 3045 can faithfully and accurately reproduce the full spectrum of sound encapsulated on the Studio Master. Until now, music lovers have only been allowed to hear an edited version of the full fidelity because our delivery systems, be it tape, vinyl, or CD, did not have the capacity to hold all the information contained in the Studio Master recording. With High Res downloads and streaming we can now enjoy exactly the same experience the artist heard in the studio when the recording was first made.