I got an XTRONS PX5 unit, model number, PB78AA4IP, it is an excellent head unit, very pleased so far, all seems to work as it should. The only problem i am having right now is the the noise in the background on all audio functions like radio , phone , gps. Sounds like a bad ground but the standard stereo works fine. Could be a mismatch with the boss amplifier? i contacted XTRONS support and they advised me to conenct a filter or another harness which needs to be ordered from the factory, it might take a few week. Anyone kow how to fix this issue? i did some reseach on the internet, it seems to be a common issue with all the Chinese aftermarket stereos, not only XTRONS
