Welcome onboard my music travel set. The size of A17 is really small and great battery. It use only 1 battery bar for around 7+ days music listening amazing!. The devices itself contain 64GB storage and you can upgrade by put MicroSD card up to 128GB. And main feature is it supported 24bit/192kHz playback.

Audio Specification
Audio Modes : ClearAudio+/DSEE HX/5-band EQ/VPT/Dynamic Normalizer/DPC
Station Preset(s) : Up to 30
Audio Power Output : 10 + 10 mW
Tuner : FM Tuner
Tuner Frequency Range : 87.5 – 108.0 mHz
Frequency Response : 20 to 40,000 Hz (when playing data file, single signal measurement)
Audio Format(s) Supported :
MP3: 32-320 kbps (incl. VBR) at 32, 44.1, and 48 kHz
WMA: 32-192 kbps (incl. VBR) at 44.1 kHz
FLAC: at 8, 11.025, 12, 16, 22.05, 24, 32, 44.1, 48, 88.2, 96, 176.4, and 192 kHz
L-PCM: at 8, 11.025, 12, 16, 22.05, 24, 32, 44.1, 48, 88.2, 96, 176.4, and 192 kHz
AAC: 16-320 kbps (incl. VBR) at 11.025, 12, 16, 22.05, 24, 32, 44.1, and 48 kHz
HE-AAC: 32-144 kbps at 11.025, 12, 16, 22.05, 24, 32, 44.1, and 48 kHz
ALAC: 16-24 bit at 8, 11.025, 12, 16, 22.05, 24, 32, 44.1, 48, 88.2, 96, 176.4, and 192 kHz
AIFF: 16-24 bit at 8, 11.025, 12, 16, 22.05, 24, 32, 44.1, 48, 88.2, 96, 176.4, and 192 kHz

Combined with Sony XBA-Z5 hybrid 3-ways in-ear headphone. Its really good headphone. The shop also bundled the upgraded cable “MUC-M12SM1”. And about sound quality is hard to explained here. If you have a chance please go and try at a shop. :-)

Audio Specification
Driver Unit : Closed, Hybrid 3-Way (BA full-range Linear Drive + BA Super Tweeter + 16mm dynamic)
Power Handling Capacity : 100 mW (IEC)
Sensitivity (db) : 107 dB/mW
Frequency Response : 3 – 40,000 Hz