The Funky Puppy is a 2 in 1 version of The Silver Paw and The Silver Funk which allows the user to toggle the link feature with a footswitch rather than using the extra 3.5mm jumper cable needed to use it with the separate stomp boxes. When using the two separate units together the filter wont function independently if the jumper cable is plugged in. This 2 in 1 version solves that problem and allows you to access the full potential of all three effects available from this unit.