[Vancebo]

Ditto on what others have said.

You may not need one unless...

...You can’t dial in the tone you desire with what you have. I think you shoul be able to.

...there are other tools you need besides a good EQ section. Mute switch, boost switch, notch filter, effects, tuner, etc.
If you answer yes to the above then look into any preamp that has the tools you are looking for. These are some of the brands I have tried that could possibly work for you. Fishman, Baggs, Radial, Fire-Eye Red Eye, Mesa Rosette, Grace, and my new fave Sunnaudio. They all can do the job but each of them vary by the features they have. You kind of need to figure what tools you really need and then let us know then people here are glad to direct you.