I have a stock HK radio in my 2012 ultra with 4 Polk audio speakers, they are the DB522 coaxial speakers. They sound ok but I have been told that the correct amp would improve the clarity. The speakers are 4 ohm and rated at 300 w. I know NOTHING about amps and am looking for something that would be pretty easy to install and wire. I can follow directions and have plenty of tools. I did remove my radios and re solder the auxiliary port a couple of years ago.
Thank for any help you can give.

 

If you are going to keep the stock HU.you can use a stinger spx 700x4 as it has high input capability. The question is how will those speakers you have react to having power. Some amp/speaker combos just don't work together as others will attest to. Even though they claim to go 300w that is not RMS rating but more like max power and those speakers wont take that much power for long. You might have to update the speakers too.