Tuesday, February 6, 2018

Harman Kardon HKOS4BLKAM Onyx Studio 4 Features, Specs and Manual


Add a premium feel and portability with the Harman Kardon Onyx Studio 4 bluetooth speaker. This has a unique design and speaker construction that is definitely different from current market bluetooth speakers available today. Feel the bass easily conquers a room with its dual passive radiators speaker and enjoy up to 8 hours of battery life out of a single charge.


60 Watts of Power

The 60 Watts RMS power is unbeatable especially if it is portable and powered by battteries. Even on a noisy environment it will still be on top and it will be heard. While indoors it can easily fill up your room with sound as if you have a whole setup of speakers.

Dual Passive Radiator Speakers

This speaker allows for more bass in a small portable size. It will easily produce bass even on max volumes.

50Hz to 20KHz Response

The wider and higher the response rate, the more accurate and premium the sound output would be. The Harman Kardon Onyx Studio 4 delivers crisp highs, mids and lows on a small package.

Built-in Microphone

The built-in microphone allows you to make calls and the Harman Kardon speakers acts as a super loudspeaker. This is great if you need a conference type of conversation with your family or friends.

3,000mah Battery

The Onyx Studio 4 is rechargeable and will last up to 8 hours of music playback. Perfect for portability and it will last a day of regular use.

Technical Specifications

Harman Kardon
Onyx Studio 4
Model Code
Special Features
Dual Passive Radiator Speakers
Total Output Power
60 Watts RMS
Frequency Response
50 Hz – 20 KHz
Signal to Noise Ratio
Wireless Connectivity
Speaker Phone
With built-in microphone
  • 3.5mm Audio Jack
  • Charging Input
Battery Capacity
3000 mah
Battery Type
Battery Life
Up to 8 hours of playback
Charging Time
Up to 5 hours
Dimensions (HxWxD)
10.2 x 10.9 x 6.3 Inches
4.5 Pounds
Inside the Box
  • Power Adapter
  • USB Cable


  • Incredible sound on a small portable speaker
  • Excellent bass output


  • Pricey
  • Odd design that may tip or knocked over
  • Charging time may take a while especially when using low ampere chargers

Would I recommend the Harman Kardon Onyx Studio 4?

For the sound quality in a small package it will be a definitely good buy. And if you like odd looking speakers and you like to be different then the Onyx Studio 4 is for you.


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