Advanced D.sound technology is comprised of 4 elements to elevate your audio experience. A digital amplifier helps reduce distortion . The S-XBS and Digital Audio Gain control help to improve bass response at higher volume levels. MP3 Re-Master technology delivers outstanding sound quality from compressed music files. Up to 155 hours of MP3 and 86 hours of CD audio playback with the included external battery case that lets you power the unit with 2 AAA and 2 AA batteries. No-Skip system ensures skip-free listening, even in active situations. CD-R/RW compatible.

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