heres some info on these amps from the us amps website:
This full-featured power house defines state-of-the-art car audio around the world. This amazing product is complete with a fully variable 24dB crossover, Remote Bass Gain, and a 36Hz subsonic filter to deliver massive power where and when you need it most. Exclusive Smart Amp Technology (SAT) monitors amplifier functions and keeps a retrievable record of faults and time of operation
USA-2000 and USA-2000X
Two Channel Class AB Amplifier
Total Power Output: 2000 Watts RMS
THD at Rated Power:
Stereo Separation: >98dB
Signal/Noise Ratio: 105dBA
Frequency Response: 5Hz-50KHz
Fuse Rating: 300 Amps
Dimensions: (Including Terminals)
62mm / 2.44in High
229mm / 9.0in Wide
654mm / 25.75in Long
Weight: 7.26kg / 16.00lb
Variable 24dB Low-Pass Active Crossover
USA-2000 Only
One Ohm Stable
250 Watts x 2 into 4 Ohms
330 Watts x 2 into 3 Ohms
500 Watts x 2 into 2 Ohms
1000 Watts x 2 into 1 Ohms
1000 Watts Bridged into 4 Ohms
1328 Watts Bridged into 3 Ohms
2000 Watts Bridged into 2 Ohms
Available in Black or Chrome
USA-2000X Only
Two Ohm Stable
500 Watts x 2 into 4 Ohms
660 Watts x 2 into 3 Ohms
1000 Watts x 2 into 2 Ohms
2000 Watts Bridged into 4 Ohms
Available in Black or Chrome
also
click here to go to that page on us amps website, hope this helps---Dinty