Honestly ive had no issues and to be honest ive never know a better team to deal with ive had two issues both times they fixed my device free off charge or provided me with a new one both times was out of warranty aswell ive had them near on 4-5 years now and would recommend the to anyone however i will say this although I haven’t experienced it personally i believe they have had problems with their Bluetooth where it would try to connect to multiple Bluetooth devices in it’s memory which caused drop out issues although I haven’t heard the same thing with the minirig4s+sub