|With 10uv in I get 7mv out driving an earbud. The power consumption is less that 2.5ma. It should run for over 100 hours on a 9 volt battery. So it needs a build.|
NOTE: I added a diode and coil to the last amp I built and can listen to my local AM station through the speaker. It draws about 8ma. This one delivers more output with less battery load according to the sim. Time to find out.