Class D amps emit EMI which interferes with FM signals.

If you use FM, then look at other classifications of amps such as the PBR300x2 amps.

 

I use Biketronics BT2180, effortless in constant high volume listening and only get warm to the touch have no problem with FM reception using aftermarket head unit and that el cheapo yellow wire Biketronics call an antenna...but if I can do it again I might go with SS amp instead, it is just too cheap to ignore, never really listen to FM anyway....

 

Coming from a guy that had the SS. The BT is better. I don't regret a thing.

 

I have the Soundstream. I'll trade you amps plus throw a little cash in with the deal.