I liked this product so much that I made a video. Check it. The U3 worked right out of the box and I was very surprised at the performance and build quality. I also checked out the U2 (guitar wireless system) and was equally impressed. I've used other high-end wireless systems for live performance and in the studio as a live bassist/engineer and also for in-ear monitoring. As an AV studio owner who often acts as a musician, producer and technician during a session, I find it very important to have a reliable wireless bass, earphones and a wireless microphone (in my pocket) so that I can can speak . Musicians, away from the talkback button and wherever I am in the studio. With the XVIVE system, I can go back where I need to go, wirelessly and at an affordable price. Highly recommended. I understand there can be issues with the wireless Wi-Fi network and I had to disable the Wi-Fi router which I sometimes use to control certain iPad functions in the studio. Batteries charge quickly and last a long time. I will use it at a concert next week. I'll update here when I can. ROCK ON XVIVE!