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Black rectangular AC-DC power adapter with barrel tip and detachable mains cable

ABLEGRID

ABLEGRID DC Adapter Charger for Harman Kardon Onyx Studio

SKU CH-A4JN-3WSGD

Replacement DC power adapter with worldwide AC input and barrel connector for Harman Kardon Onyx Studio speakers

  • Battery TypeUPS
  • Worldwide 100-240 V input works in any region
  • 50-60 Hz frequency matches mains supply worldwide
  • Over-voltage and over-heat protection safeguards the speaker
  • Barrel-tip connector fits Harman Kardon Onyx Studio models
  • CE, FCC and RoHS certified for safety compliance

Compatible DC Adapter for Onyx Studio

The ABLEGRID DC adapter replaces the original power supply for Harman Kardon Onyx Studio models HKOS4WHTBSG and HKOS4BLUBSG. It delivers a DC output through a barrel tip connector and accepts AC input from 100 to 240 volts at 50 to 60 hertz. Over voltage and over heat protection are built in. The package includes the adapter and a power cable.

For owners needing a replacement charger

This unit suits owners of the listed Onyx Studio speakers who need a new or spare mains charger. It is not for users with other Harman Kardon models or speakers that require a different voltage, polarity or tip size. Buyers who want a battery pack, a USB-C power source or a multi-device supply should look at something else.

Simple desktop installation

Plug the supplied cable into the adapter, connect the barrel tip to the speaker’s DC jack, then insert the mains plug into a wall socket. No tools or configuration are required. The most common issue is ordering the wrong tip size or output specification, so verify the speaker’s label before purchasing. Ensure the adapter has adequate ventilation during extended use.

Highlights

  • Worldwide 100-240 V input works in any region
  • 50-60 Hz frequency matches mains supply worldwide
  • Over-voltage and over-heat protection safeguards the speaker
  • Barrel-tip connector fits Harman Kardon Onyx Studio models
  • CE, FCC and RoHS certified for safety compliance

Specifications

BrandABLEGRID
Battery TypeUPS

Questions about this item

Does my Harman Kardon Onyx Studio HKOS4WHTBSG or HKOS4BLUBSG need any extra cable to start charging with this adapter?

The package includes a new AC power cable, so the adapter connects to mains power and the speaker's DC barrel-tip jack without extra parts.

Will this non-OEM charger interfere with the speaker's original battery management or cause overheating?

Built-in over-voltage and over-heat protection keeps output stable, and the adapter is 100 % compatible with the original Onyx Studio power requirements.

How can I confirm the adapter is delivering power correctly after I plug it in?

The speaker's charging indicator should light up and the unit will power on normally when the DC barrel tip is seated and the AC cable is live.

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