Not only the weight is amazing, so is the price and size at only 1 rack space! If that is not enough, check the power,

2 x 400 Watts @ 8 Ohms
2 x 600 Watts @ 4 Ohms
2 x 900 Watts @ 2 Ohms

The frequency range is 20 - 20,000 Hz., with a signal to noise ratio of 100 dB.

 
 Weight 13.7 lb (6.2 kg)
 Power:
 2x900 @ 8 Ohms
 2x1,500 @ 4 Ohms
 3,000 Watts bridged mono @ 8 Ohms
  
 Frequency 5 Hz - 36,000 Hz
 THD less than 0.02
 S/N Ratio 100 dB