Reviving an old post. I have had a very different experience with my 21600.5, as it seems to keep overheating on me and going into protection mode. Everyone else on this post seems to love it so I am not sure why I have so many problems.

I have mine installed in the little hidden storage space under the floor of a Jeep Wrangler 4 door. I would say possibly the space does not get enough air and that is why it shuts down, but I have driven with the floor off of the amp, exposed to all the wind with the top down, and it still shuts down.

So I don’t know if I just got a bad amp or there is an issue with my setup. If I have the volume up around 24 (out of max of 34) and I am listening to hip hop nation on SiriusXM, within 5 minutes I start to get a burning smell and it shuts down. If I listen to less bass heavy music, i can get it to go for about a half hour before it shuts down