Abstract: The present invention is an apparatus used to connect a typical guitar strap in non-traditional positions on the body of a guitar or bass guitar, which affixes to the instrument to provide stability and balance. The core components of the apparatus are a resilient hollow plastic outer shell with an external protrusion extending from the apex, a protective non-slip thermoplastic rubber inner layer, and metal hardware, suitable for use with virtually all guitar straps presently in use, attached to the external protrusion. The invention can be used to attach a strap to a guitar or bass guitar securely, without damaging the finish or affecting the tonal integrity of the instrument. Furthermore, it should be noted that the apparatus is generally a parabolic shape, intended to securely fit over the upper or lower horn of a guitar or bass guitar.

Abstract: A stringed instrument pickup and feedback system, comprising a sound pickup device disposed on a string instrument. The sound pickup device comprises a transducer and at least one pickup, a sound processing circuit and a power supply. The pickup activates the transducer to realize resonance enhancement on the instrument body. The transducer is disposed on the string instrument unrestricted by internal bracing. The instrument can be any of pickup, guitar, ukulele, violin, Guqin, Guzheng and Mandolin. The present invention enables the construction of stringed instrument to add vibration and amplify sound of a stringed instrument using the transducer and thus reduce the dependence on rare woods in manufacturing these instruments.