Preamp and effect processor for acoustic guitar. With a simple, quick and harmless install, the ToneWoodAmp magically attaches to the back of your acoustic guitar using magnets, allowing you to add different effects UNPLUGGED – NO AMP REQUIRED, With the effects emanating naturally and organically from the body of the guitar. Similar to the way the strings excite the top of the guitar to produce sound, ToneWoodAmp excites the back of the instrument, producing sound waves of effects such as reverb, echo, delay, tremolo and more, which interact with the natural sound of the guitar itself. The ToneWoodAmp is also a multi-effect processor which you can connect with any Amp/PA system and is also an iDevice interface allowing you to experiment with audio and MIDI apps. The ToneWoodAmp provides the newest and most unique acoustic guitar playing experience without the need for an amplifier! It enhances the natural sound of virtually any acoustic guitar, adds depth, texture and effects, and creates a unique surround sound feel never experienced by acoustic guitar players before. If you desire to experiment with more effects and other cool tools, you can use your ToneWoodAmp with an iDevice and try your favorite apps including guitar effects, MIDI instruments and much more.