quantum is very overrated... i know the quantum 3000.1 doesnt even put out 2000 watts... most of the time they put the max power on the quantum amps.. but us amps i would go with.. they are more legit.. plus i think a couple ppl have us amps on here... if anything just google them and look at the specs..
* Dynamic power: 4000w * RMS Power (1ohm):1500wx1 * RMS Power (2ohm): 450wx1 * RMS Power (4ohm): 200wx1 * signal to noise ratio: 80db * frequency response: 20hz to 500hz * low level input sensitivity: 20mv to 6v * continuously variable low-pass crossover * bass eq control @ 45hz: 0 to 12db * line output with low-pass crossover * platinum-plated connectors * Dimensions: 2.5 x 8.75 x 15.75 Inches
XT4000D - US Amps 1 Ch 4000 Watt Power Amplifier XT 4000D
well b4 you go and do that... from the specs i see on the us amp.. it only does 1500 watts rms @ 1 ohm... and the quantum says 2000rms @ 1 ohm... but like i said quantum is very overrated... just my opinion..