Cherub GT-4 Acoustic Guitar Preamp System with Onboard Tuner & Piezo Pickup

Cherub GT-4 Acoustic Guitar Preamp System with Onboard Tuner & Piezo Pickup The Cherub GT-4 is a 4 band EQ with Chromatic tuner, feedback-fighting notch and phase effect. The visible portion of GT-4 is only 52mm x 54mm x 4mm. Low battery message will be displayed when the battery is getting low. FEATURES: 3 band EQ Chromatic Tuner Feedback-fighting Notch Filter Phase Mid Frequency Control Low Battery Check LED Includes Piezo Ceramic Pick-up SPECIFICATIONS: Input impedance: 10MO Frequency Response: 20Hz - 20kHz Control Range: Low ±12dB at 100Hz / Middle ±12dB at 250Hz-10kHz / High ±12dB at 6kHz Pick-up: Piezo Ceramic Pick-up Output jack: 6.35mm Battery Life: Over 100 hours Power Supply: 9V Alkaline Battery Dimensions (L x W): 54mm x 52mm??? (NXGT4)