I regret to say that the really ingenious principle this Kapos not working very well. In my acoustic guitar the 6th string (low E string) is often poorly disconnected, creating a rattling and a generally poor sound arises. Only in a few frets of Kapo does here what he should and that too only if you additionally pushes him after touched down on the neck on the strings. The spring has in my opinion, simply press down too little power to all the strings clean and to the fretboard.
In classical guitar and electric guitar he works fortunately better but who plays electric guitar been with Kapo.
Would not ours no longer buy and put on a different model.