MM-Audio Z4 4000W DSP Karaoke Microphone Mixing Amplifier – Black. Condition: New, Open Box — all included items shown in photos and untested unless otherwise noted; distressed packaging; labels removed from box exterior. 20Hz – 20kHz Frequency Response. 3x HDMI in, 1x HDMI eARC. Non-Missouri residents will need to pay IN PERSON (credit/debit cards only) within 4 days after the listing ended. Paid items must be picked up within 10 DAYS after the end of the listing. Social distancing policies WILL be enforced during pickups. Kansas City, MO 64129. This applies to both the item and retail packaging. Sell Smarter with Kyozou. Inventory and Ecommerce Management.