Swiff Audio WX520 Monitor Wireless System

I've been looking for an IEM system with these features and format my whole life and I really wanted to like this one... but the audio quality is truly unacceptable. It completely destroys the high frequencies, I can hear digital artifacts everywhere compared to a cabled connection. I can't figure out how other people can say this product sounds good... just a couple of other reviews are mentioning the poor audio quality. I want to remind you all that this is a wireless system with DIGITAL audio transmission, not ANALOG. Therefore, the quality of the transmitted signal SHOULD BE PRISTINE just like the quality of a cabled connection. "Better audio quality" is the only reason digital wireless transmissions were invented... and so having a digital transmission that degrades the sound instead, is a complete non sense. Another thing I want to mention is that the Aux/Line switch of my unit apparently does absolutely nothing. I can switch it back and forth and nothing happens to my ears... I don't know if it's broken or what. I'm returning this thing to get a MiPro hoping it is better.