Yamaha TransAcoustic Guitar is an entirely new concept in acoustic guitar technology that recreates the experience of playing in a rich, live room without needing any external amplification or effects.
TransAcoustic technology designed to expand the capabilities, versatility and the sound of traditional musical instruments and is now available in the Yamaha LL-TA handcrafted dreadnought and LS-TA concert acoustic guitar. The technology allows the player to add both reverb and chorus to the natural sound of the instrument – emanating from the guitar itself, without having to plug in external effects or amplification. It accomplishes this 
through the incorporation of an actuator inside the guitar. When the player performs, the strings cause the actuator to vibrate, which is then conveyed to the guitar body and to the air around the guitar, resulting in stunningly authentic reverb and chorus effects. Three knobs located on the side of the guitar provide easy adjustment of the level of the effect, as well as a line out volume level and an on/off control.
The two models are available in Vintage Tint and Brown Sunburst finishes, with clear pick guards and ebony fingerboards. They each feature a solid Engelmann spruce top that has been aged with Yamaha A.R.E. technology, as well as rosewood backs and sides. Five-ply mahogany and rosewood necks are climate resistant, and they intonate and stay intonated over time. The edge of the neck and the frets are rounded, making it smooth all the way across the instrument. An SRT piezo pickup provides the guitar’s plugged-in tones. In addition, a redesigned battery box is integrated with the guitar’s endpin, reducing acoustic sound loss.
