Think you know what an internal microphone is all about? Think again. This mic will shatter your preconceptions. This revolutionary new amplification system features our patent pending Tru - Mic microphone technology. The mic is mounted to the bridge plate inside of the guitar to capture the majority of your guitar's true voice in a way that only a microphone is capable of - plus it is amazingly feedback resistant. Our Element under saddle pickup carries only the lowest frequencies for punch and authority. The SL, with a pre-set mix between the mic and pickup and all of the electronics are housed in the end pin, features only a small volume control at the sound hole. It is ideal for non-standard sound hole sizes and for those of you that don't want a larger control unit hanging on the guitar top. Now you can plug in, crank it and sound more real than you ever thought possible!