The Ceriatone site could use some more basic documentation, but most of the amps are clones so you can look to the original to some extent. The Prinzetone does have more of a description than some of the others do tho.

On the back are two speaker outs (wired in parallel) and one jack for the included tremolo footswitch. Also note this is NOT the Princeton Reverb, as it has no reverb. This is more Nik's take on the blackface/brownface Princeton. There is no FX loop, don't know how hard it would be to put one in.

There's several pics on this forum of the completed amp, mcinku's is better than mine but has some modifications.