i have been in love with digital audio since my first Logitech 20 years ago. Dolby and DTX technologies are movie theater creations. Please take my advice. Buy a set of Logitech Z906 5.1 Speakers for $300 US ($400 AUS). Plug in a Sangean DAB+ radio. You must start easy with digital audio. I have talked for years to everybody about Dolby and DTS. Entertained with movies and dance music. Sorry that no one 'gets it'. Position audio 5.1 creates the hand in hand experience that sound and vision work together for movie theater experience. But never met a person in my life that wanted to know about the work. Digital audio is a chain of custody from the media to the ear. Any fault, at any step will fail. Purpose built technology for such a complex goal is best. Audio will get better, and cheaper over time. Learn Dolby & DTS with Logitech Z906 5.1 Speakers. They only do one job. Do it well and neat. Keep these speakers through an upgrade to component equipment. Go Onkyo. All technology will fail. Keep legacy equipment for reference and redundancy. Gift old equipment to worthy students. You need to teach digital audio too truly learn. Play sound as it was made to be heard. Entertain, but don't explain. People wont be listening to you. And wasn't that the entire point? Also keep ALL cables off the floor. Never loop or knot a cable. Keep out dust. Use top quality power boards (Belkin). Note, over twenty years, I have never meet anyone who understands anything about digital audio. Not yet. Good luck. Michael Down