Some of the plans on the page which Ludus linked will work fine with a 4558, if the supply is a good 7V (9V or 12V would be better).
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I Have Better Op Amp Tone Controller Schematic.. Any One Can Easily Use It With Any Type Of Amplifier.. Its Sounds Well. I Have Also Used it Many Time..
It Gave Me Good Results Every Time...
You Can Use Tl072 NE5532 Or 4558D Easily..
Enjoy😊
Here Is A Schematic..
It Gave Me Good Results Every Time...
You Can Use Tl072 NE5532 Or 4558D Easily..
Enjoy😊
Here Is A Schematic..
Attachments
That schematic has no capacitor on the bass pot wiper so the opamp needs to be a FET input device.