Barcus Berry BREEZEII Acoustic Guitar Preamplifier System<div style="text-align: left;"><strong>[Product Information]</strong><ul><li><span class="a-list-item"> The Breeze II system features a three band EQ and an on board digital tuner. Simplified and reliable sound control. </span></li><li><span class="a-list-item"> Specs are volume， 3-band EQ， strap button 1/4-Inch output jack， piezo under-saddle pickup. Tuner ON mutes the preamp output while tuning. </span></li><li><span class="a-list-item"> After 2 minutes an Auto-Off feature turns off the tuner to conserve battery power. Tuner can also be manually disabled by pressing and holding the tuner button until flashing LEDs are extinguished. </span></li></ul></div><img src="http://ecx.images-amazon.com/images/I/41xZgQlFWtL.jpg" noproxy>