Simon Imiso8 years ago000is this subwoofer connected directly to the radio, or does it need an additional amplifier?Show in original language (German)Dimitri Pfluger8 years ago000This loudspeaker still needs an amplifier. Active subwoofers that can be connected directly to the car radio (+power) can be found here: https://www.digitec.ch/de... (Select filter "Active subwoofer")Show in original language (German)Comment