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#1 |
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diyAudio Member
Join Date: Jul 2012
Location: Brisbane
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A long time ago I replaced the duals with AD712s & the quads with LT1058s.
I have a small stash of AD797an which I could implement with adapter boards to replace the duals....but not for the quads. ? Is it worthwhile updating to more current ICs eg: OPA627s/AD797BR or AR....these been available as plug in modules off the net. Thks....eng hoe |
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#2 |
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diyAudio Member
Join Date: May 2005
Location: toronto
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You need jfet input opamps only or the bias current iof bipolar opamp inputs upset how the bandpass filters work.
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#3 |
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diyAudio Member
Join Date: Jul 2012
Location: Brisbane
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Ok...the ICs I mentioned are Fet inputs.
Thks...eng hoe |
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