Hello, I just bought the denon df 102 no regrets .... I also want to buy a mp3 and connect the chain. It is obviously compatble with an iPod and you can plug in a dock (support) to improve the quality of sound. However, I would rather buy a different brand of MP3 (not iPod u). In short, it must be connected directly to the front. I want to know if the sound quality is good anyway? What users think? Thank you