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Diamond input buffer

I would like to extend this inverting design
to an optimized one
because PRESENCE effect of this shunt configuration
really striking new features
http://www.diygene.com/schemas/a-700sch.pdf
 

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what about simple version ?

> I like it. It has overtones of the Lazy Cat SSA in there too.

Or course you'll need to flesh out some details. The PSRR looks to be very risky with the simple version - unless you are using regulated supplies for the front end at least.

I have a pair of transformers somewhere, problem is they don't allow any real current as they're for small signals only. How can you modify your concept to keep dc out of the transformer.
 
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