J&M's ROKKER! -P series-- THE world s most powerful 4-ch amplifier for your Harley Bagger audio system ... This exciting new J&M DSP controlled 4-channel 500w fairing/rear speaker amplifier kit has been developed specifically for use on the 2014 Harley Ultra with the stock Harley radio (either variation). This is a full variety class G digital amplifier and is spec d at 125watts RMS per channel X4 channels. (500w total) driven continuous into a 2 ohm load @ 14.4 vdc. Amplifier installs to the customizeded stainless-steel 2-piece bracket system. to supply strong and protected mounting inside the StreetGlide or Ultra fairing. in addition to blocking amplifier heat from being moved to the radio. These brand-new ROKKER XT -P series amplifiers are now totally programmable thru the internal digital signal processor (DSP) and come out of the box currently dialed in for this certain Ultra-C ...