- $32.85Car Dc Adapter Compatible With Harman Kardon Onyx Studio 2 Ii Bluetooth Wireless Portable Speaker System Harman/Kardon Hkonyxstudio2blkus Harmon.Newegg
- $16.99for Harman Kardon Charger Onyx Studio 7 6 5 4 3 2 1 Wireless Bluetooth Speaker Replacement Harmon Kardon Charger 19V AC Power Cord Supply【10 FT】 VHBWAmazon
- $29.38ABLEGRID 19V 3.0A AC DC Adapter For Harman Kardon Onyx Studio Portable Wireless Speaker System with Rechargeable Battery Harmon Kardon 19VDC 3000mA.Newegg