Outside AC Powered Subwoofer with Audio input
Browsed the web, couldn't find anything, does the inclusion of an Amp make this a no product?
Your post isn't very clear, but are you inquiring about a passive subwoofer? That is, a cabinet w/ driver in it, connected by speaker wires to an external amplifier that powers it? If so, is it a general question about whether passive subs are good (they are), or are you looking for input on a particular make & model?