Fiio am0 non amplifier module for fiio x7 the fiio am0 is a non amplifier module designed for the fiio x7 for use when you do not require amplification provided by the am1 am2 and am5 modules the am0 allows all the normal functions of the other amp modules such as dac mode charging and usb storage functions without providing any additional amplification the fiio am0 non amped module has no amplification function no headphone port and only one usb port therefore am0 is for users looking to use