If an acoustic instrument is desired to be amplified without great effort, or if you have an instrument that you do not want to "disimprove" with holes, then the Harley Benton HB-T Single Transducer pickup is just right. The piezo pickup is simply attached to the instrument and plugged into the output socket, which is also easy to attach. Also note, the pickup was developed by Dieter Kaudel, formerly guitarist of the Würzburg band Munju! - Highly recommended!