Music gear I/O dock for iPad

Boing Boing: "In Gweek 002, Rob, Joel, and I talked about digital musical instruments and some of the music making apps available on the iPad. I complained bitterly about the crappy output of the headphone jack, and Joel rightly upbraided me for even trying to use it. I just found out about this $200 iPad dock from Alesis that allows you to connect all kinds of audio gear to it.