GU-3 is an onboard EQ for Ukulele that has 2-band EQ, main volume control, built-in accurate chromatic tuner and LED display. Low Batt. Light will remind the user to replace the battery when the battery gets low. The compact size makes GU-3 easy to install into a Ukulele. 

PARAMETERS:

• Features: 2 band EQ and chromatic tuner for ukulele
• Input impedance: 22MΩ
• Frequency Response: 20Hz-20kHz
• Control Range: Bass ±12dB at 100Hz / Treble ±12dB at 10kHz
• Pick-up: piezo ceramic pick-up
• Output jack: 6.35mm
• Low battery check LED
• Battery life: Only EQ Over 450 hours
• Tuner on Over 100 hours
• Power supply: 2 CR2032 batteries
• Dimensions: 57mm(L) x 39mm(W)