nah acutlally i did find the best thing about their description
...item 1
This is a class D amp so you can be sure the power is extremely efficient. This amp has a built in low pass crossover network so you can fine-tune and adjust the bass frequencies.
.....it says rite in that description its class D
...item 2
Features:
* 1 x 2250 RMS @ 1 OHM
* 1 x 4500 watts peak @ 1 ohm
* 1 x 2250 watts peak @ 2 ohms
* Top of the line Components
* Heat Management System
* Built in sub-sonic filter
* High Efficiency Mosfet Power Outputs
* True 1 ohm stability (other brands write 1 ohm, but when you run them at 1 ohm the amp smokes. these are true 1 ohm stable!)
* Built in Low Pass CrossOver - adjustable at 12 dB per octave
* Bass Remote Control
* Class A/B!!!!!!!!!!!!WTF!!!!!!!!!!!!!!!!WTF
* frequency response: 20-250 KHz
* THD: .05 %
* S/N Ratio: Greater than 95 dB
* Input voltage: 11 - 14.4 volts
* Adjustable Input sensitivity: .2 MV - 5V
* bass boost control @ 45 hz - 12 dB
* dimensions: 14.6" x 2" x 10.9" inches