Charger for Harman Kardon Onyx Studio 7 6 5 4 3 2 1 - Replacement 19V

In this review of the Charger for Harman Kardon Onyx Studio series, the bottom line is simple: this replacement power supply is for owners who need a direct, reliable swap for a lost or failing Onyx Studio charger. The reviewer found it delivers the correct 19V 3.42A output, a long 10 ft cord, and robust safety protections that match the expectations for powering portable speaker systems. If you want a plug-and-play charger that restores full portability and run time to an Onyx Studio model, this Narpendu-compatible unit is an efficient and practical choice.

Key Features

• Compatibility: Works with Onyx Studio 7 6 5 4 3 2 1 models and the listed part numbers, making it a direct replacement for original chargers.
• Power Output: Provides a stable 19V 3.42A (65W) output, ensuring the speaker charges reliably and performs as expected under normal use.
• Extra-Long Cord: The 10 ft length gives flexible placement and easier access to distant outlets without needing an extension.
• Safety Protections: Built-in overload, over-voltage and short circuit protection helps protect both the charger and speaker during charging.
• Durable Construction: Pure copper core and quality PVC jacket deliver low resistance, bending resistance and heat resistance for longer service life.
• Tested and Listed: UL listed safety testing and flame retardant materials provide added peace of mind for indoor charging use.

Who It's For

This charger is ideal for owners of any Harmon Kardon Onyx Studio 1 through 7 who need an exact electrical match and a longer cable than many originals provide. It suits users who value safety features and a robust cord build, for use at home, in small offices, or while traveling where outlets may be distant.

It is not for users who need a battery pack, wireless charging, or a significantly different plug size; buyers should confirm the 5.5mm x 2.5mm plug and 19V DC output match their speaker before purchasing. Those looking for multi-device fast charging or USB-C solutions should look elsewhere.

Pros & Cons

Pros

• Correct 19V 3.42A output that restores full speaker functionality without modification.
• Long 10 ft cord for flexible placement and easier outlet access.
• Comprehensive safety protections and UL listed testing for reliable daily use.
• Sturdy construction with pure copper core and durable PVC jacket for longevity.

Cons

• Only one plug size (5.5mm x 2.5mm) is supplied, so it will not fit speakers requiring different connectors.
• Not a multi-port or USB-C charger, so it serves a single device use case only.

Specifications

Input	100-240V 50/60Hz
Output	19V 3.42A (65W)
Plug Size	5.5mm x 2.5mm
Cable Length	10 ft
Compatibility	Onyx Studio 1-7 and listed P/Ns (APIONYXST3, NSA40ED-190200, etc.)
Protection	Overload, over-voltage, short circuit

Our Verdict

The charger is a practical, cost-effective replacement for Harmon Kardon Onyx Studio owners who need the correct 19V 65W power supply and a longer cord. With tested safety features, solid construction and straightforward compatibility, it represents good value for anyone who simply needs a dependable replacement power adapter without extra bells and whistles.

Frequently Asked Questions

Will this charger fit my Onyx Studio model?
Yes, it is specified for Onyx Studio 1 through 7 and matches the 5.5mm x 2.5mm plug and 19V output for compatible units.

Is the cable long enough for flexible placement?
The charger includes a 10 ft cord, which allows easy placement away from wall outlets without an additional extension.

Does it include safety certifications?
The unit is UL listed and includes overload, over-voltage and short circuit protections for safe charging.