I've driven non-photo resistors to the point you could see the glowing in time to the music ;-) And smell the smoke. Now with a 1500W space heater as a dummy

I've driven non-photo resistors to the point you could see the glowing in time to the music ;-) And smell the smoke. Now with a 1500W space heater as a dummy load on a 1000W amp, you hear a little music come out of the heating elements without any speakers.