On Tue, 4 Jul 2017 20:27:14 +0100, "Woody"
wrote:

If you don't want the faff of getting the bits and building it then
N47FL at £6.99 from Maplin will do the job. Uses a NE5532 amp chip so
should be very low noise. Supply is 3-25V so any old PSU you have
lying around....

That is exactly what brian is looking for

d

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