Feel like a DJ when down on your board, use next to your vocal fx table, hook it up to your set.
Link to guitar effect pedals with expression inputs. It needs a Stereo patch cable or it won't work. Use a longer cable & attach to your mic, stand, guitar, face .. for some added expression or noise bending live.
Small, neat, no power required at all.
The slider itself feels a little light and maybe best not to use your feet.
May serve some use for mix board or your own DIY project.
Happy I purhcased.