Microphone Pickup - SODIAL(R) Piezo Contact Microphone Pickup for Guitar Violin Banjo OUD Ukulele Mandolin Professional Piezo Contact Microphone pickup - 1/4" jack with 10 inch cable. Plug to your amp, bass amp or other recording equipment. Fit for Guitar, Mandolin, Nanjo, Violin, Ukulele, Viola, Cello ,OUD etc Includes velcro but not putty attachment options. Plug to your amp, bass amp or other recording equipment.