Our SMP200 Class D Digital Subwoofer Amplifier may be compact, but with 200W of power, this little amp packs a powerful punch. 

• A compact but powerful 200-Watt Class D subwoofer amplifier to power passive subwoofers used in home theater applications
• Highly efficient Class D technology runs cool under demanding loads
• Adjustable low-pass filter for distortion-free bass
• Front-panel phase, crossover and volume controls
• Choice of speaker level or audio line level inputs (RCA)
• Auto sensing feature automatically turns on or off when signal is detected or undetected
• Distributed power capability for speakers and subs Includes

Specifications: 

• Maximum Output Power: 120W@ 8 Ohms; 200W @ 4 Ohm
  
• THD: 1%
• Frequency Response: 20Hz-160Hz +/-1dB
• Signal to Noise: 95dB
• Input Sensitivity: 200mV
• Crossover: 35-160Hz
• Phase: 0-180°
• Trigger Input: +12VDC to +24VDC
• Line Voltage Range: 110-120/220-240 VAC
• Standby Power: 1.8W
• Dimensions: 8.5" W x 1.75" H x 9.8" 
• Overall Length (including knobs/connectors): 10.7" 
• Weight: 2.9 lbs