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.

I always carried my LD IEM with a Gator case on the baggage when I flight, along with my Beta 58 wireless... but tired of the space those occupy, when I saw on he Thomann web site browsing for another IEM (I have actually 6 systems but none have the audio quality of the LD) this Swiff Audio I've decided to try it. What a nice surprise! and now I ask for a microphone, carrying that tiny and beautiful box... the band that worked with me last time they were so curious about that tiny IEM.
PROS: Tiny, compact, beautiful, crystal clear sound, robust, options on connections and the possibility to get stereo (I don't use it, no need) and very good battery duration (they don't lie, I performed for 4 hours, at the end it was half of charge).
CONS: Signal. It loses it easy, in my case I perform all time "inside" the stage, behind FOH, but if as part of the show I go to the public in a dance court, as the last gig, I lost the signal, When I went to the bathroom, I have them on, and just closing the door I lost signal as well, but my friend, on the last gig, I gave it to her and use my traditional LD, she was so happy and she never lost connection, I think it depends on the place.

IM A SINGER AND I BOUGHT IT FOR MY GIGS TO BE ABLE TO SING AND MONITOR MYSELF WITHOUT BEING HELD DOWN BY CABLES. THE IDEA IS CUTE. A SMALL COMPACT MONITORING SYSTEM THATS PLUG AND PLAY. SO I SPENT THE LAST OF MY MONEY TO MAKE SURE THAT I HAD IT BEFORE I WENT OUT. HAD IT IN MY POSSESION FOR LIKE 4-5 MONTHS LITERALY UNUSED AND BOX FRESH, NOW IM ON SIGHT FOR A JOB AWAY FROM HOME. MY FIRST GIG WAS UP SO I TRIED TO CHARGE IT ON THAT DAY, THE TRANSMITTER SHOWED THAT IT WAS FULL BATTERY WHILE PLUGGED BUT OFF THE CABLE IT WOULD NOT SHOW ANY CHARGE, BUT IT WOULD CLEARLY CHARGE THE RECEIVER THATS DOCKED INSIDE, WHICH WAS BAFFLING. I FIGURED THAT MAYBE I COULD USE IT WHILE THE TRASMITTER IS ALSO PLUGGED TO A POWER SOURCE, WHICH I DID FOR THAT ONE GIG, AND IT WORKED IT INSTANTLY PAIRED THE TRASMITTER AND THE RECEIVER AND I HAD AN OK SOUND FOR THE TIME. NOW AS IM WRITING THIS IM ON TODAY FOR THE SECOND GIG, TRIED TO CHECK IF IT WOULD WORK AGAIN, AND NOW THE TRANSMITTER WONT STAY ON EVEN IF ITS PLUGGED TO A POWER SOURCE, IT WOULD JUST BLINK ONCE AND THEN INSTANLTY POWER OFF. NOW IM STUCK WITH THIS USELESS PIECE OF EQUIPMENT AND I CANT EVEN RETURN IT BACK AS IM AWAY FROM HOME FOR THE SEASON WITHOUT ITS PACKAGING. NEVER BEEN SO MAD ABOUT SOMETHING I BOUGHT FROM THOMANN