Add the right accessories to SounDigital car amplifiers by shopping at OnlineCarStereo.com for digital amplifier hardware. We’re an authorized retailer of equipment such as the SounDigital Remote Amplifier Level Control. It can be connected to more than half a dozen amplifier models to control overall sound or just the bass volume. Check back often for more SounDigital amplifier installation accessories. We back all of them with free lifetime tech support.