We could get into an extended discussion of RIAA equalization and its history, but why bother? This would be overkill for the average DIYer.
All we really need is the basic overview, and some idea of how to successfully integrate standard and practical circuits into our preamp. No point in re-inventing the wheel.
So lets skip the worst of the technical questions and complex equations for filter networks, and look at some real-world examples, which we can modify for our purposes.
First of all, the overview:
It is generally best to either do the EQing after the first stage of amplification, or between two stages in the signal path, so we can gain the headroom needed and control the results of our efforts.
Since we will probably only have a single stage, our RIAA network will come afterward, once the signal is amplified.
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