I recently installed a Lepai LWP-250 bluetooth audio amplifier, $24 on Amazon or Parts Express. I wasn't expecting much. I've wasted more than $24 on stuff that didn't work out. I'm pleased and surprised! Turned it on the first time and bingo! It connected with my cell phone which has all our music. It's powerful enough to more than fill our trailer and annoy the neighbors. We have so little space in our
Scamp 13 that I didn't want to use essential space for a non-essential purpose. It's tiny, about 3x5x1-1/2". I put it in the dead space at the top of the floor-to-ceiling cabinet across from the sink. I put the 5" speakers in cutouts in the
fiberglass cabinet over the bunk beds. Routing the wires was tricky. It has no controls; you do that from your bluetooth player or phone. I added an on/off switch since we are very careful with electricity use.