They don't make the Clarus SL anymore but it's still a fantastic little amp. You can find the manual with specs here: http://www.acousticimg.com/docs/manual_amp_head.pdf
I've been using it with an AI Ten2 EX cabinet and it has tons of sound even with a big band. In fact there's so much (clear) bass that I routinely have the bass rolled off on both the amp and the cab.
The Clarus SL weighs just 2.5 lbs and the Ten2 EX is 23 lbs. A very portable combo.
I'd like to sell these together if possible. Asking $800 for both units together.