I have used this clip on pickup initially to tune my cello. I clip it onto my cello bridge and plug it into my chromatic tuner. This helps me to tune my instrument rather accurately. I discovered a little known use for this pickup today. It can be used to amplify a string instrument with the use of an amp. Let me explain. I clipped this pickup onto my cello bridge, then plugged it into my Ion Explorer Bluetooth Block Rocker. Voila, instant electric/acoustic cello.
Eddie "Violoncello" Balen