Instruct: Classify Amazon reviews into positive or negative sentiment
Query: Very Unrealistic (for Piano)

I was hoping this would have more of a piano feel to it. This pedal requires a lot of pressure to get any sustain out of my casio keyboard. If I have shoes on and "stand" on the pedal, it will sustain the notes I play. It is far from the lighter touch I am used to on a real piano. On a real piano, I can let my heel rest on the floor and with light pressure on the pedal it will depress fully. It would be nice if they made the tension adjustable. Also, it is just an on-off switch. In other words, the degree of sustain does not vary (as it does with a piano), making it even more unrealistic. I would recommend shopping around if you want a piano-like pedal, or if you want a pedal that does not require a lot of pressure to work.