In article .com,
Porky wrote:
Ok, I will check into that. Why then is an op amp a better choice,
other than fewer connections involved, which is not a major issue. I
like solder.

It's an instant audio solution with a high input impedance and pretty low
out. Easy to set the gain and tailor the response.

--
*Isn't it a bit unnerving that doctors call what they do "practice?"

Dave Plowman London SW
To e-mail, change noise into sound.