I bought this one a year ago and installed it with no problems. It's awesome.

ammoon Ukulele Ukelele Uke Piezo Pickup Preamp 3-Band EQ Equalizer Tuner System with LCD Display https://www.amazon.com/dp/B01M0E59XT/ref=cm_sw_r_cp_apa_i_6wg8DbYYTSRMN