i tried soooooo many envelope filters in the past and always wanted to try out the EHX Nano Bassballs, but i decided to get his clone (= Mooer Bass Sweeper) because of the two external "trim-pots". but i´m really having hard times to find THE sweet spot to make the pedal sound great. is the Bassballs also complicated like the Mooer? i both tried active and passive basses, with and without compressor.