this is a semi-parametric midrange with a fixed high and low shelf. The Q of the mid control is fixed so its really should just be called sweepable mid EQ and not aprametric. Fuck you ibanez and maxon. Can be used for all sorts of silliness. Excels at cocked wah tones. useful for some toneshapng after a fuzz pedal. Quieter and cleaner sound then the parametric EQ in the earlier series that contained the TS808. I had one of those at oen time but I sold it for a lot of money. I almost never use this pedal but its handy to have around I suppose.