Received the Amp today. After unboxing it I had it hooked up to the speakers and sub in three minutes. I had the wires laying there waiting for Amazon to drop it off. I plugged it in and it announced set up mode. That's when everything went bad. After I entered the app to begin setup the Amp would not connect with a wireless connection. I unplugged it a half dozen times to reenter setup. I rebooted the router and my phone. Finally it connected. I don't know why, but it did. Then I installed the firmware update. It rebooted. It never showed up in the app after that. I unplugg3d it again and rebooted it. It came up in the app saying it was connected to a different network than my phone. ???? on that. Rebooted again everything looked good. First song started to play. I lost all volume control. Rebooted again. The Amp never came back in the app. I boxed it up. Refund. I like WiiM products, and I have a Pro and Mini. This thing was unstable and stressful. That 30 seconds of the song sounded good. Right now I'm angry and want to go back to the old system. I'm not waiting in the Q for another one.