Tal wrote:

> I want to connect a stereo signal (audio) and convert it to mono, BUT keep
> the stereo inputs separate for use in other equipment.
> is it possible?
>
> I was thinking using a fast oscillator (~100Khz) and a 4066 bilateral
> switches but it looks overkill. can you think about a simple solution?

  Buffer the two stereo inputs, and then mix them in the traditional manner.

(excuse the ascii text)

           |\
Left -----| >---/\/\/\---|
           |/             |
                          +----- Output
           |\             |
Right ----| >---/\/\/\---|
           |/

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