Note:
small;">The input capacitor can be replaced with with a 0,1uF cap if you wish.
The 10pF capacitor is optional and will start rolling off everything over 15KHz. 5pF will double this to 31KHz.
The tone control requires a low impedance input. If you already have a low impedance input, the input buffer can be removed. However, the input is inverted.
The op-amp is not critical, a 4558 would be just fine.
I don't show the parts for +4,5 references. Here is the +4,5 voltage divider I used.
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