1. A1--Can neither be switched on nor get recharged(or doesn't work without connecting to power supply)

A: 1. If it's a brand new product, you can let it stay charging for a little while and then disconnect to see whether it can turn on or not.    
    2. If you have used the product for a while, pls try to use another USB cable to get it charged. In case the red light doesn't stay stable, it would be the problem of E06's battery. In this case, pls contact us by sending email to support@fiio.net directly. We will help you handle this matter ASAP.