purchasing EMS units

Yes my IT band tightness/ knee pain is a symptom of chronic tight quads/gluts/hip flexors. I have used massage/stretching/foam roller which gives temp relief.

I was thinking of buying a Globus EMS, to work out the knots/ break up any scar tissue in quad and hopefully loosen out IT bands/tendons around the knee. The quad is very tight beside the IT band,with lots of knots .

Both legs are tight, but right only has knee pain( walking up steps, bending) Also i have noticed my glutes feel weak when walking up steps.

I have no expereince of EMS, any advice would be helpful in terms of pad placement for loosing out the quad and the breaking down of knots/scar tissue etc.