... lossless music player headphone amp and DAC music player Features of HIFI E.T MA9:1, With built- ... in 1150mAh 8.4V lithium battery, can be replaced.2, With ... PCM1704 DAC, can be replaced by manufacturers3, With built-in headphone amp board OPA627+ double ... common nondestructive file formats: WAV, APE, FLAC, MP3, CUE. 8, 8G RAM, you can also ...