Does a subwoofer amplifer exist?

Gallo just released their Reference SA. (www.roundsound.com).

It can be used to set:
x-over
boost (through an eq function & stereo volume)
phase

hsu,nht,dbx,m&k,all 4 of these manufacturers make subwoofer amps for passive subs.

mike.

Thanks, good references.

If you decide to build your own sub, rather than buy one, then you might want to look at Outlaw Audio's M2200 monoblock amp, which sells direct (via Internet) for $325. For more info, go to this link: http://www.outlawaudio.com/products/2200.html

You may also want to consider just buying Outlaw Audio's powered subwoofer, which was designed for them by Hsu. It sells for $579, and has gotten some excellent reviews.

Wow, these amps aren't cheap. Why are they so much more expensive than a subwoofer amp plate? The Outlaw amp has a good price; however, I would still need to get a crossover, possibly the Paradigm unit I see on Audiogon on ocassion.