Hi-Fi Man - HM-801 - Portable Music Player Plays: APE, AAC, FLAC, WMA, OGG, WAV PCM, MP3 DAC function: Coaxial (44.1 kHz, 96 kHz), USB DAC (16 bit, 48 kHz) DAC Chip: Burr-Brown PCM1704U (for player, coaxial connection, and USB) Removable headphone amplifier circuit board/module Battery life: 7 to 8 hours (Lithium ion polymer battery)