Preamplifier designed for acoustic guitar. With its small size it is suitable for most guitars. It includes volume control, 3 band equalizer, phase switch, battery indicator, built-in tuner with LED display, onboard anti-feedback control (Notch), brilliance control for additional tone shaping and built-in microphone with separate volume control mixing between the pickup and microphone. It is equipped with a piezo-ceramic Fishman Sonicore pickup with easy installation. Powered by 9V battery with a possibility of operation up to 88h. Connection with a 6.3 mm jack.