I am using this for an old model Yamaha keyboard - PSR 730 and it works like a charm. Officially Yamaha prescribes the FC7 foot controller which costs way too much in India. I have heard that if you don't use the official Yamaha pedal with their keyboards the lower presses may not behave as expected ... for example if you press the controllers towards the heel, the volume (or any other type of expression) may not end up being zero. While this seems to be the case with this pedal and the PSR 730 coupling, it doesn't really bother me. Although not completely zero the volume goes down quite a bit and that works fine. With an economical price tag (specially as compared to the FC7) and universal compatibility ... this pedal is just great! The Build quality is fine for me and even with frequent use the pedal should last a while. It has a polarity switch underneath its body which may need to be turned to the 1 or 2 position, the first time you plug this into a keyboard or a controller in order to get the it to work. But once the pedal starts working, it will perform fine without needing any adjustments on the polarity switch. Great price and a great buy!