Find the right power accessories to keep your sound system on at OnlineCarStereo.com. A digital power capacitor from PowerBass holds an emergency reserve if your speakers and subwoofer ever outdraw the amplifier. The farad capacitor instantly kicks in to prevent breaks in the sound. Want to play music in the garage or at a show? Plug a PowerBass AC-to-DC power supply into the nearest outlet. Our free shipping and lifetime tech support lets every audiophile buy with confidence.