The Hafler Transnova 9505 puts out 750W at 8ohms, in bridged mode, and is fully differential from input to output(unlike a lot of other amps). They are still supported by Rockford Fosgate, that actually built them. Fosgate bought the Hafler name a few years back. They have phenomenal slew rate and damping factors. Here's a link to the manual:(http://www.w1vd.com/9505manual.pdf) I've been using one for years with my woofers. It's given me wonderfully accurate, defined and extended bottom end.
