KITARA EQ-7545R Great Piezo Pick-up/Pre-Amp Equalizer System with 4 Bands for Acoustic and Cigar Box Guitars Black (Curve)+4 picks

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Jiayouy Guitar Pickup 4 Band EQ-7545R Preamp Amplifier Equalizer Tuner Piezo Pickup for Acoustic Guitars

Jiayouy UK-2000 2-Band EQ Equalizer Ukulele Piezo Pickup Preamp Tuner System 1 Set