The Performer SE™ lives up to its name with the new Epiphone eSonic2™ preamp system. Made in cooperation with Shadow Germany, the new eSonic2™ preamp features a built-in, easy-to-use tuner. When engaged, the guitar’s output is automatically muted with no “popping” noise, making it a perfect choice for stage use. You can even push in the “tuner” button and unplug the guitar without a loud “pop.” Other controls on this state-of-the-art preamp include Master Volume, NanoFlex™ Tone, NanoMag™ Tone, Stereo Blend, Low Battery indicator and a Phase switch to help eliminate unwanted feedback. The preamp uses two 2032 lithium watch batteries that are not only lightweight, but provide significantly longer life than old-fashioned, heavy 9V batteries.