Hi Michael and of course all the others

I supposed that in your post #3 you said that you intend to get the audio signal from the link between the stereo deck and the amplifier, and in post #7 you wrote about getting the signal from speakers wires, which one is the correct one?

Besides a lot of other things, at my company we produce audio amplifiers (OEM regime) from 100W to 3000W (2 channels). One thing I've learned, turning on a amplifier with signal present at the inputs when the amplifier has no soft-start feature or other kind of (BUMP) protection will surely damage the speakers, please take care in your aproach regarding the method of turning on the power while monitoring the ammount of signal at the inputs.

I suppose that you are really determined to use a PIC, because as all the others had already said there are "other" ways to get the same result.

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