This is a great subwoofer for music. It is a sealed 12" subwoofer with a 125 watt class a-b amplifier. Nice small size. Works great. Has controls for volume, phase, and crossover. Has some surface scratching.
Key Specifications:
Type: Powered/Active Subwoofer
Driver: 12-inch
Amplifier Power: 125 Watts
Frequency Response: Down to 20 Hz, with significant output around 60 Hz.
Crossover: Adjustable, typically 50 - 125 Hz, with a steep slope (around 36 dB/octave) above the cutoff.
Controls: Volume, Phase, Subwoofer Cut Frequency.
Connectivity: Wired.
Dimensions (approx.): 15.4" W x 20.1" D x 18.5" H.