Bass Booster Schematics
The input capacitor can be replaced with a .01uf 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 impedence input. If you already have a low impedence input, the input buffer can be removed. However, the output is inverted.
The opamp is not critical. A 4558 would be just fine.
I do not show the parts for the +4.5 reference. Here is the +4.5 voltage divider I used.
IC A4558 Pinning
The A4558 is a monolithic Integrated Circuit designed for dual operational amplifier.
Absolute maximum ratings of A4558 Ap-amp
Supply voltage VCC 20 or ±10 V
Differential input voltage VIND 20 V
Input voltage VIN ±10 V
Power Dissipation PD 300 mW
Operating temperature Topr -45 ~ +85 °C
Storage temperature Tstg -55 ~ +150 °C