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Harman Kardon Onyx Studio 4 Portable Bluetooth Speaker- Black Used

isupplies1

(1779)

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US $169.99

ApproximatelyAU $261.00

Condition:

Used

Quantity:

Out of stock10 sold

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Postage:

Free FedEx Ground / FedEx Home Delivery®.

Located in: Linden, New Jersey, United States

Delivery:

Estimated between Fri, 15 Aug and Wed, 20 Aug to 94104

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No returns accepted.

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eBay item number:285766993842

Last updated on 09 Jul, 2025 06:45:20 AESTView all revisionsView all revisions

Item specifics

Condition: Used: An item that has been used previously. The item may have some signs of cosmetic wear, but is ...

Features: Bluetooth

UPC: 0028292280467

About this product

Product Identifiers

Brand

Harman Kardon

MPN

HKOS4BLKAM

UPC

0028292280467

Model

Harman Kardon Onyx Studio 4

eBay Product ID (ePID)

12031965960

Product Key Features

Compatible Brand

For Apple, For Samsung, For Sony, For Android

Color

Black

Battery Capacity

3.000 mAh

Connectivity

Wireless, Bluetooth, USB

RMS Power

60 W

Shape

Round

Compatible Model

Universal

Type

Portable Speaker System

Dimensions

Item Weight

4.5 lbs.

Item description from the seller

About this seller

Joined Sep 2007

Visit store Contact

Detailed seller ratings

Average for the last 12 months

Accurate description

4.9

Reasonable postage costs

5.0

Postage speed

5.0

Communication

5.0

Seller feedback (564)

This item (1)

All items (564)

w***m (97)- Feedback left by buyer.
More than a year ago
Verified purchase
Had to find a electric cord for it but it works and was half price of a new one.

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Product ratings and reviews

Learn more

4.8

981 product ratings

856 users rated this 5 out of 5 stars
70 users rated this 4 out of 5 stars
25 users rated this 3 out of 5 stars
16 users rated this 2 out of 5 stars
14 users rated this 1 out of 5 stars

Good sound quality

Good value

Most relevant reviews

See all 782 reviews

by HCNv7WoSQ2q@Deleted
28 Mar, 2018Top favourable review
Best bluetooth speaker on the market!
This speaker if completely awesome! The sound quality is outstanding. Very solid bass but not overpowering. High are crisp and clear. I am going from the Onyx 1 to the 4. I didn't think the sound quality could get any better but I was wrong! I like the new features too like being able to connect more than one speaker, being able to unplug the power adapter and the speaker continues to play. The sound is better too on battery power. The original dropped down quite a bit when not plugged in. The 4 does this too but not nearly as much. If this thing was made by Bose it would cost over $500 on a black Friday deal! It blows any of the Bose Bluetooth speakers away and I know because I've had a few of them. It will rattle your windows! Very good speaker! Harman Kardon makes very good products ... This speaker if completely awesome! The sound quality is outstanding. Very solid bass but not overpowering. High are crisp and clear. I am going from the Onyx 1 to the 4. I didn't think the sound quality could get any better but I was wrong! I like the new features too like being able to connect more than one speaker, being able to unplug the power adapter and the speaker continues to play. The sound is better too on battery power. The original dropped down quite a bit when not plugged in. The 4 does this too but not nearly as much. If this thing was made by Bose it would cost over $500 on a black Friday deal! It blows any of the Bose Bluetooth speakers away and I know because I've had a few of them. It will rattle your windows! Very good speaker! Harman Kardon makes very good products that are priced much better than the overpriced Bose stuff.
Verified purchase: YesCondition: NewSold by: angelseller
by c.kringle
02 Oct, 2017Top critical review
Sounded Good for a Month.
My brother had one of these and it sounded great and then one day he blew the bass. I bought one and took extra good care of it and in a little over a month the same thing happened. I never turned it up over 50% and it has an automatic volume adjustment where it turns your iPhone down before the music starts so it doesn't damage the speaker. One day when I plugged in my phone it clipped out for a second and then adjusted. since then the bass rattles. Beware. My brother had one of these and it sounded great and then one day he blew the bass. I bought one and took extra good care of it and in a little over a month the same thing happened. I never turned it up over 50% and it has an automatic volume adjustment where it turns your iPhone down before the music starts so it doesn't damage the speaker. One day when I plugged in my phone it clipped out for a second and then adjusted. since then the bass rattles. Beware.
Verified purchase: YesCondition: NewSold by: tgc-2009
by tolas34
14 Nov, 2022
Best in Class / Kick-butt
Talk about the perfect size design and sound quality using the most awesome Bluetooth portable speakers I've ever listened to given the size and configuration crossovers crystal clear good solid bottom then I don't know Ace actually vibrate the floor. For the speaker studio 4 model that's the only drawback is they can't take a lot of power sound best when you're pushing baby five 10 months through but boosters don't seem to work very well I am boosters that is they decorate the quality and Fidelity of the sound. Any other drawback is if you're running more than one speaker which I like to do although the pamphlet and probably expect so you can run up to 100 of these things tied together it's very difficult to get the two speakers to link the Bluetooth and then the rolling stereo so I can ... Talk about the perfect size design and sound quality using the most awesome Bluetooth portable speakers I've ever listened to given the size and configuration crossovers crystal clear good solid bottom then I don't know Ace actually vibrate the floor. For the speaker studio 4 model that's the only drawback is they can't take a lot of power sound best when you're pushing baby five 10 months through but boosters don't seem to work very well I am boosters that is they decorate the quality and Fidelity of the sound. Any other drawback is if you're running more than one speaker which I like to do although the pamphlet and probably expect so you can run up to 100 of these things tied together it's very difficult to get the two speakers to link the Bluetooth and then the rolling stereo so I can imagine it must be really difficult to being more than two speakers drive together. But once you get past that they are totally awesome I recommend them to everyone and anyone who has good taste in music and an above average sensitivity to tone (able to hear differences between, lows, midrange & highs)!
Verified purchase: YesCondition: NewSold by: harmanaudio
by railroadsonparade
05 Nov, 2022
You cannot beat direct delivery from the factory.
The new red indication light for low battery is an improvement from the original design. I continue to be mystified about when it is charging. If the AC from the wall is actually charging when the unit is in use I can only guess. The first design had a code of slow and fast multiple flashing lights from the power button. Maybe this does, I can't tell. I plug it into the wall, go to bed and when I get up the power button is not flashing, it is an uninterrupted illumination indicating the unit is still on, so don't go on vacation with the unit plugged into the wall and make sure you unplug it before you go to work. It does not shut down after charging.The new red indication light for low battery is an improvement from the original design. I continue to be mystified about when it is charging. If the AC from the wall is actually charging when the unit is in use I can only guess. The first design had a code of slow and fast multiple flashing lights from the power button. Maybe this does, I can't tell. I plug it into the wall, go to bed and when I get up the power button is not flashing, it is an uninterrupted illumination indicating the unit is still on, so don't go on vacation with the unit plugged into the wall and make sure you unplug it before you go to work. It does not shut down after charging.
Verified purchase: YesCondition: NewSold by: harmanaudio
by temeshe0
28 Sep, 2019
One of the best!
Impeccable sound quality from something so small. The bass really hits like bass should, the mesh screen is actually removable and I personally find the device to sound and not to mention look sooo much better without the screen as the high notes are much more pronounced and the sound carries much further. It’s truly one of the greatest I ever tried. Bose has absolutely no comparison in quality and performance! At a 599 retail it’s quite a bang for the buck. And for the unimaginable 199.99 and free ship. I would consider this deal to be mind blowing, much like the sound that comes from the device. Everything about this speaker is just amazing! I will definitely get more of these to try the stereo pairing abilitiesImpeccable sound quality from something so small. The bass really hits like bass should, the mesh screen is actually removable and I personally find the device to sound and not to mention look sooo much better without the screen as the high notes are much more pronounced and the sound carries much further. It’s truly one of the greatest I ever tried. Bose has absolutely no comparison in quality and performance! At a 599 retail it’s quite a bang for the buck. And for the unimaginable 199.99 and free ship. I would consider this deal to be mind blowing, much like the sound that comes from the device. Everything about this speaker is just amazing! I will definitely get more of these to try the stereo pairing abilities
Verified purchase: YesCondition: Refurbished

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Harman Kardon Onyx Studio 4 Portable Bluetooth Speaker- Black Used

Shop with confidence

Item specifics

About this product

Product Identifiers

Product Key Features

Dimensions

Item description from the seller

isupplies1

100% positive Feedback•2.8K items sold

Detailed seller ratings

Seller feedback (564)

Product ratings and reviews

Most relevant reviews

Best bluetooth speaker on the market!

Sounded Good for a Month.

Best in Class / Kick-butt

You cannot beat direct delivery from the factory.

One of the best!

More to explore:

isupplies1

100% positive Feedback•2.8K items sold

Detailed seller ratings

Seller feedback (564)