The PSB-200 subwoofer amplifier delivers clean, solid power required to drive small-to-medium sized in-wall or floor stand style subwoofer speakers. Provide 200W RMS @ 4 Ohms (140W RMS @ 8 Ohms) of deep, hard-hitting high fidelity bass amplification and is tailored for home audio and home theater audio systems. Allows compensation for subwoofer location relative to the main speakers, can be adjusted from 0° to 180°. The Low Pass Filter from 35Hz to 160Hz. Unique solid and beautiful modern compact chassis exterior design for easy place on your music media stand/cabinet, fits anywhere you need it. The cool running light weight Class D amps are quiet and can run all night without over-heat issue. This subwoofer amp is an ideal match to our passive in-wall subwoofers. The PSB-200 is stable down to 4 ohms, so it will easily drive one or two subs. Use the front panel crossover and phase controls to dial in the sound just the way you want it.