In answer to some questions, this stereo has a conventional audio input, so you can easily use it with sound sources other than an iPod. As someone has observed, the Cyber Acoustic web page claims the Nano 3g can't be charged by the CA-421 dock. Au contraire! When using electrical power and the included dock adapter, I had no difficulty charging a Nano 3g with this CA-421 dock. In fact, contrary to the company's description, it did the same with a Classic and the Touch (I don't own an iPhone, though.) Since writing the following, I've "gone through" other speakers, including the most popular rechargeable Altec Lansing and Logitech, both of which balk at playing the newest Touch. This inexpensive iRhythms model actually sounds competitive and continues to be the only portable I can depend on (no doubt due to the well-constructed adapters and the provision for using regular AA alkalines). As for the outdoors volume limitation, even the very pricey, much lauded Tivoli iPal falls flat on its face when used outside. These battery-operated machines simply are not backyard party animals. Finally, these are far and away the best labeled and designed adapters I've seen.
Portable Speaker
