Let the hive mind of Engadget get that for you.
"I am looking for a device that will stream sound from one source to several recipients. For example, I want to stream sound from my TV or stereo to my phone or MP3 player that has radio and Bluetooth capabilities. I have looked into radio transmitters and they seem like a decent choice, but I can't find one that uses external power (USB or from the plug) and I would want one with a transmit range of around 50 meters. Thanks!"
"800% without noticeable loss of details"...?
what people do not understand is that when you start with less resolution, it does not matter how much software or hardware behind a scaled image, you are NOT going to get more detail. I hope you are only trying to say "without noticeable gain in artifact" which would be far more appropriate.
a good example would be a pair of brown pants pictured in SD - when seen in HD you notice that they are actually brown corduroys. it does not matter how good Genuine Fractals or Super Bandlet technology is - if it isn't there to begin with, it isn't going to be there afterwards.