Power Supply For Harman / Kardon Nova Stereo Bluetooth Speaker Hifi 2.0 Active Monitor Speaker 19v Adapter Charger - Laptop Adapter - AliExpress
Amazon.com: 19V AC/DC Adapter Charger Power Supply Cord for Harman Kardon Onyx Studio 5 4 3 2 1 IV III II I Bluetooth Wireless Portable Speaker HK NSA40ED-190200 ESX2567Q ONYX3 2GP468 AU38AA-00 : Electronics
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K-MAINS AC-AC Adapter Replacement for Harman Kardon Speakers HK195 HK195s PC Multimedia Speaker Syetems Wall Home - Walmart.com