Acoustic guitars with built-in electronics, also known as Acoustic-Electric guitars, are simply acoustic guitars with a built in pickup device of some kind. Acoustic pickups come in many forms including piezo pickups and undersaddle transducers, yet all achieve the same end of amplifying the unplugged tones of an acoustic instrument. Acoustic pickups have existed since the early '60s and models with stock pickups were popularized in the '70s by the likes of Ovation. More recently, brands like Taylor and Takamine have made acoustic-electric models arguably more popular and ubitquitous than their non-electrfied counterparts.