OK, and how about this for tone control?
It has 3 frequency bands which is better than only 2 bands. It has the opamp inputs biased at 0V so it needs a dual-polarity supply but the opamps can simply be biased at half the supply voltage then a single supply can be used. The circuit will work with many other opamps with no changes. The circuit is very old so the 5uF input capacitor value is HUGE and the input resistor value is very low at only 10k ohms. The number "5" is not used anymore 4.7uF is used today). Instead I would use 0.33uF (a 330nF film capacitor) and a 100k input resistor.