I've got this gig with a band and i'm in need of an envelope filter for some of the songs. In the past my bass micro synth always had my back, but with lower tunings it completely loses it at about the 5th fret. Any recommendations are welcome, keeping in mind I'm based in Europe. Not bustin' the bank would also be nice, it doesn't have to be the greatest pedal out there. It just has to do a job at lower tunings (DGCF, ... ). Thanks a lot!