Feature:
lets a person tap in a tempo, links with similar floor pedals.

Quality:
Causes no sound quality loss.

Value:
Its cheap, It functions perfectly. Good value.

Desirability:
Im going to need more.

Sound:
Causes no sound quality loss.

Ease of Use:
Couldnt be easier.

Support:
What is there to support?

Overall:
I dont know what the other review for this product is talking about. This is an extra switch used for pedals with tap tempos such as the Boss RC-2 or Phase Shifter. It doesnt take any time to learn how to use since it's function changes depending on what you plug it into. It can be used as a foot switch to tap in the tempo so that you dont have to reach down while on stage. It is exactly what it says it is and it is perfect for it. The linking function helps to organize my floor boards, it is really only useful if you own more than one linking floor board though.