Last year I had my LF Audio wireless bass controller sent away for repairs as when I tried installing the update something went wrong so I sent it back he fixed the cpu problem and updated it for me and sent it back by the time I received it back it was winter and the season was over and I planed on doing upgrades over the winter well when I finally hooked it back up the bass controller was acting all funky id turn it down and the volume did what it wanted sent him a video of it acting up and with no hesitation he knew what the problem was sent me a new one and works amazing these are amazing products and amazing service