500XL Desk Speakers bigger, better, louder, cooler Sometimes bigger IS really better, specially when it comes to sound. That's why we took a puny pair of earbuds, put them in Fred's highly technical Way Big machine, and created 500XL - it's 500 times the size of the original! How great will these look on your desktop alongside your mp3 player or PC? 500XL includes a built-in amp and 3-way power - it runs on batteries; you can connect it to your PC's USB port with the supplied cord; or plug it into the wall with a generic power supply (not included). The stand-up, peggable clamshell packaging really makes a statement.