Android phone user here (Oneplus One), most Android phones have fucking terrible DACs, short of HTC's devices. And your Archos tablet in question is very uncommon, using the same sorts of tiny HDDs that the iPod Classic used. Almost all Android devices I've seen besides Archos tablets all use flash storage which rarely comes larger than 64GB on high end devices, and currently even if other PMPs have microSD slots supporting 128GB cards, the iPod Classics can beat them in capacity. The only portable (as in pocketable) music player than I know of with decent build quality, storage capability greater than 128GB, and a good DAC is the iPod Classic.