What do these 3 series have in common? | MALLET REVIEW

Reviewing the original Zivkovic mallet series from Innovative, along with the two variants that came after from the Innovative Artisan series and the Shlagkraft Zivkovic series. See the final version of Caleidoscópio here: h   • Caleidoscópio | Gene Koshinski   00:00 Introduction 02:56 IP5002 Artisan 07:11 Schlagkraft NJZ-2R 11:00 Innovative NJZ2 13:46 Direct Comparison 17:01 Outtro