Sorry to butt in, but you reckon this is any good for $650?

* 800W × 1 Into 4 Ohms, 20Hz-20kHz @ < 0.05%THD
* 1500W × 1 Into 1 or 2 Ohms, 20Hz-20kHz @ < 0.1%THD
* Adjustable Subsonic Filter, 10-80Hz
* Remote Control Included
* Input Voltage Selector
* Precise Frequency Selector
* Variable Bass Boost; 0-15dB @ 30-125Hz
* Adjustable -12db/Oct. Low Pass Crossover, 50-250Hz
* Gold Plated Connectors; RCA/Speaker/Power
* Speaker Level Input
* Dimensions 21 1/4" × 12" × 2 7/8"