I think this kit has been discussed here before.  I have great interest in building one w/ the passive output (2V is more than enough for me) but as usual, no fracken time to do anything about that.   
 
If you get one built Todd, I'd probably go w/ a sigma11 power supply rather than the RAKK PS kit.  I'm a firm believer that when it comes to digital there's no such thing as too clean a power supply.