Analogue-sequencer

> Hello, new P3 owner here.  Unfortunately I haven't been able to power 
> it up yet  (I assumed the US distributor would have included a power 
> supply, so I didn't source one ahead of time - my fault for assuming).

I thought they were including them - I'll check with Shawn.
 
> However, it would be nice if the included manual had a basic section
> in the back with the technical specifications.

The next manual will have that sort of thing, plus an index.
I'm planning on doing a separate Aux events manual too, and getting the
tutorial video done just as soon as I build my over-head camera mount.

> Just the basics like 
> HxWxD, weight, and power requirements (9v, xxxmA, center positive???, 
> 2.1mm barrel - O.D. or I.D. ?).

9v, at least 400mA, centre positive DC or AC, 2.1mm barrel inside diameter.
There's a polarity protection diode in there, so you can't fry it with the
wrong polarity, and AC will be recitifed if you find it easier to get hold
of an AC output adaptor.
Hope that helps.

Best regards,
Colin Fraser
Sequentix Music Systems Ltd
http://www.sequentix.com