I wouldn't think it does anything, going to empty pins. Maybe it does something on the 500E upwards. Those models have an EQ bypass and a mids EQ switch.
Drum & bass loop jam during my band Scarlet Blue's album release gig. Go check us out! Scarlet Blue: https://play.spotify.com/album/39Ymms3ijuZV0R1bWIMVQt ht...