LRBaggs Element Plus piezo pickup. I bought this but ended up not using it, so I'm putting it up for sale. Works perfectly! It seems this pickup is standard equipment on Gibson Southern Jumbo guitars. The Element Plus is just the brand name, and it appears to be the same as the Element VTC, which is sold separately. However, since it's tuned for Gibson guitars, it's a rare item in a way. Recommended for converting an acoustic guitar into an acoustic-electric.