Emotiva BPA-1 = Dayton APA150
These two amps appear to be the same. I picked the Dayton up on P.E.'s BF sale and it's quite the little power house. It's heavy and about the same size as a small loaf of bread. I was surprised at it's clear and powerful sound in stereo and eventually plan to use it to drive two big Eminence Alpha's bass drivers in open baffles. What makes it great for this application is it's cross over control. It's got a big cooling fan which never came on while playing it. I believe there are some other reviews here on the Emo/Dayton.
As inexpensive mono-blocks the Dayton could kick serious butt with it's impressive 200 watt bridged power.
http://www.emotiva.com/bpa1.html
http://www.parts-express.com/pe/show...pa%20150%20amp