At a keynote this morning in warm and sunny California, Steve Jobs revealed the iPod Hi-Fi, a $349 speaker system that runs on D batteries or AC power, and docks your iPod of course. The dock supports all iPods, even the Shuffle, the AUX input will also allow you non-iPoders to get in on some Apple gear.

“Apple is reinventing the home stereo with the new iPod Hi-Fi, the first iPod accessory that adds true high-fidelity sound quality to the iPod,” said Steve Jobs, Apple’s CEO. “iPod Hi-Fi’s unrivaled acoustic performance and stunning design is at home in any room in the house.”

I’m not sure if you can disable this feature when in battery mode, but the iPod Hi-Fi automatically recharges your iPod while docked. It will display features on your iPod to maximize the “iPod Hi-Fi experience” such as Tone Control, Large Album Art mode and volume mirroring.

Steve also announced a hand-made italian leather carrying case for the iPod or iPod nano. That will run you $99.