Hereâ€™s exactly what Edirol have to say in their press releaseâ€¦
These incredibly small, USB-powered speakers offer an easy way to boost the computerâ€™s audio quality and volume without requiring an extra power connection. The MA-1EXâ€™s innovative design offers superb sound quality by completely by-passing your internal sound card. The MA-1EX works as a sound card, offering high-quality D/A converters and superior shielding from electrical interference of other components. The MA-1EX can even act as a simple S/PDIF optical output and headphone amp for your computer. The MA-1EX speakers are ideal for any notebook computer user for use in presentations for small groups or the music enthusiast who wants better sound quality and more volume from his notebook without carrying a large, bulky set of speakers.
Price and Availability
The EDIROL MA-1EX are available at a recommended retail price of â‚¬ 79