TwelveSouth BassJump. RMS rated power: 0 W, Signal-to-Noise Ratio (SNR): 80 dB. Connectivity technology: Wired, Connector(s): mini USB. Width: 127 mm, Depth: 127 mm, Height: 57 mm. Packaging width: 167 mm, Packaging height: 167 mm. Compatible operating systems: Mac OS 10.5.8 +