I don't know anything about this vendor, but I originally considered the Eclipse 4-channel amp with the variable subsonic filter for my 6x9s to take the ultra-low bass out... and vito corleone had great results doing just that with an external xover as the filter.

I just found that same amp for $299. Pretty good deal if anyone is assembling a system for a TSX or TL and using the MB Quart RCE 269 woofers for their only bass drivers (won't fit under a 2004 Pass seat, though...) :

http://www.acaraudio.com/product_inf...oducts_id=1201

 

That's a very good deal. I would like to get two Eclipse amps to take more advantage of my 16v pre-outs.