Thank you for viewing. This is a piezo pickup for acoustic guitars. It's an endpin jack type, designed to be installed by modifying the endpin area of an acoustic guitar. I purchased this in February 2025 with the intention of electrifying instruments other than acoustic guitars, but I couldn't install it as I had hoped. Afterwards, I tried attaching it to an acoustic guitar I own, and it was easy to install. The sound quality was amazing, faithfully outputting the original sound, which surprised me quite a bit. *Double-sided tape or putty is required for installation. Included: Box, Instruction manual x2