Behringer ULTRABASS BB410 Bass Guitar Amplifier Cabinet - 4x10 inch, 1200 watts High Power Bass Amplifier Cabinets: 4 x 10 Inches Bugera Sensitivity: 99 dB @ 1 W / 1 m Impedance: 4 Ohms Frequency Response: 38 Hz - 16 kHz Power (RMS / Music): 1,200 W