trafoless microphone preamp wish list

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http://www.newark.com/NewarkWebCommerce/newark/en_US/endecaSearch/searchPage2.jsp?x=9&Ntt=OPA1632&newSearch=true&searchtype=mfg&Nty=1&N=0&Ntk=gensearch&y=9

Newarinone or follow the link above to find your opa1632 they sell for $3.94
 
Thanks, analag, but I was actually looking for a source in Germany. Ordering from the States is too much of a hassle.
 
So did we ever get around to designing this pre...Brad, will you not step forth and do us the honor, of some technical talk?
If not, it's still good reading for the growing list of "newbs" around here.

analag
 
analag wrote:

use a discrete opamp instead of the chip. Excellent headroom and transparency.

Why? At first : rescale all resistors /10 and capacitors *10 around op amp
and use NE5534AP instead of TL072
And by the way; check that resistive network around op amp. May be input - impedance imbalanced. ?????????????????????

xvlk[/quote]


to shift it into current mode?
 
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