This redesign updates one of Kikkerland’s best-selling karaoke mics, bringing it in line with the shift to USB-C and helping resolve ongoing customer complaints. I pushed that transition forward while personally testing compatibility across a wide range of headphones. Along the way, I found that a full USB-C audio setup caused signal interference, leading me into the details of TRRS 3-ring systems and ultimately a hybrid solution: USB-C for the phone, paired with a 3.5mm jack for reliable headphone use.