J&M Audio Rokker 330 Watt 2 Channel Amplifier Kit for 2015 and Newer Harley-Davidson Road Glide models - JAMP-330HR15 Complete kit includes 330 Watt 2 Channel Amplifier, Mounting brackets, fasteners, wiring harnesses and complete instructions. Installation Set Up Youtube Videos available on J&M's website. This Class "D" 2 channel amplifier puts out 165 watts of power per speaker at 2 ohms rating. No Radio Software Flash is needed for this amp to work correctly. This Amplifier measures 7.25 x 4.75 x 1.75 Fits 2015 & Newer Harley-Davidson Road Glide models.