Sounds impressive enough eh? Well for the parts count(11)it is, I've spent more time in development with this little guy than most of the tube units... Sound quality is very good and the current drain at 9v is only 11ma, so can be easily powered by a std 9v battery... The coil coupling the audio to the osc is very important, without it current draw is increased by 60%, is essential for battery life... The LM386L I first worked with howled terribly without the coil in place but the "N" version performs approx same with or without...
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