Rockford Fosgate Power T10001bd Mono subwoofer amp 500 watts RMS x 1 Highlights: 500 watts RMS x 1 at 4 ohms (750 watts RMS x 1 at 2 ohms) 1000 watts RMS x 1 at 1 ohm (1-ohm stable) frequency response 20-250 Hz Class bd technologySOLD................... CP 081311393195 PIN BB 27FEDBE8