Headroom BitHead Amp
If you're not satisfied with the audio output of your iPod, check out the BitHead, a battery-powered headphone amplifier that runs on four AAAs. The device delivers beautifully clear, vibrantly loud sound, and it fits perfectly into the GigaBag. The Headroom BitHead Amp has two audio ports so that you can share the experience with a friend, and it includes stick-on Velcro tabs that let you affix the amp to the back of your player. The BitHead also works with notebook computers, where it functions as an external USB sound card.