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Old 20th November 2009
Thanks for the advice John. Since I removed R9 and R10 based on Jim suggestion for using the THAT 2180, do you suggest I put them back in since I intend to use them primarily in stereo? Or if I replace the other op-amps should I be safe? I re-read your post a few times and tried to understand it the best I could, but it's a little over my head.

If the AD797 a drop in replacement for the 4458? I believe the opa2134 is, but mouser and digikey do not have them in stock.