Capo for 6-string acoustic guitar from Kyser. A Kyser Quick-Change is expertly engineered and built to last. It is reliable and does just what it is designed to do — clearly raise the pitch of the guitar so you can play in a different key without retuning or changing fingering. Seasoned professionals and beginning players alike appreciate how the Kyser Quick-Change helps them transpose their guitar in seconds, with only one hand.