Cycle Sounds Bagger Audio Power Pucks Speaker Amps Mounts directly to the stock speaker magnets. This is truly plug-and-play installation that will double your radios amp output, giving you 3 times more sound from your stock speakers Greater clarity and volume at highway speeds Features turbo boost technology that allows the rider to easily gain an additional 25% of power with the push of a button for maximum output at highway speeds Comes equipped with an onboard 3.5mm audio input jack to connect an iPod or mp3 player directly to the speaker amp without the use of a radio head unit Works great on Touring bikes with stock speakers or with Police bikes and standard Harley-Davidson models that lack a radio head unit 45 watts RMS/95 watts peak