> I have the site partially up now. I will give you a detailed example of
your
> circuit you requested on the same site tomorrow.
> Pardon the hand scribbled schematics. Will clean them up with Orcad in a
few
> days.
> http://www.pic101.com/audiosw

Switches using a FET as this does or transmission gates (a number of FETs
inside) can have their isolation greatly improved if needed by adding a
shorting device across the output (or at an intermediate point). The
shorting device is switched in antiphase with the enable device.  I had a
design that used VERY high power levels and that could tolerate only very
low leakage levels. Using a two part switch as above made all the
difference. Doing this you may have to pay attention to impedances under
various switching conditions.

        RM

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