You can pair two Bluetooth-enabled devices (phones/tablets/PCs) at the same time with one Onyx Studio 4 (multi-host feature) and the speaker can memorize up to 8 devices. Onyx Studio 4 features Bluetooth 4.2 with a 33ft Bluetooth range. The capacity is not bad but it’s not great either, especially when there are 2 woofers and 2 tweeters inside the speaker that need to be driven. But, be warned that it’s not very rugged and that the battery inside the speaker has the capacity of 3,000mAh. So, if you want to use it outdoors, you can.

Studio 4 is very much portable since it has a built-in battery and it’s not too heavy to carry around.

Still, the speaker is not waterproof (it’s not IPX certified) and it’s not shockproof so it’s not the best speaker for outdoor use. It is completely made of plastic but it’s very thick and very hard plastic. It’s kind of heavy and it looks quite sturdy. Onyx Studio 4 is made of premium materials and you can really fell that by holding the speaker. There are 6 nice-looking backlit buttons – Bluetooth, Connect+ button, volume buttons (+ and -), handsfree button (you can use it to answer/end calls, play/pause the music, or activate Siri/Google Now), and power button. Studio 4 features 3 input ports – micro USB port (for service purposes and firmware upgrade), AUX (3.5mm) input, and DC input.Īll the control buttons are on the top, along the rim. There are also two undetachable feet that provide stability. On the rear panel, you will see the carrying handle at the top, the bass reflex port in the middle, and input ports at the bottom. Picture 2 – Front panel (without the fabric grille) The grille has a protective purpose so you might want to leave it on, especially if you are going to use the speaker outdoors. You can use the speaker with or without the grille, depending on your taste. The grille is removable (but it doesn’t come off easily). Picture 1 – Front panel (with the fabric grille) There’s a simple harman/kardon logo on the grille. The whole front panel is covered with a fabric grille that protects the drivers. Harman Kardon Onyx Studio 4 is available in three colors

This speaker comes in three colors (black, blue, and white) and we couldn’t decide which one is the most beautiful. All the Bluetooth speakers made by this famous manufacturer look incredibly elegant and Onyx Studio 4 is the perfect example. Harman Kardon has truly perfected the designing process. HK Connect + app, Siri or Google Now integration Yes (2 devices connected simultaneously to the speaker) Specs Harman Kardon Onyx Studio 4 SpecificationsĦ.3 inches (including 2 undetachable feet) The speaker has one 3.5mm input but the audio cable is also not included. Hard carrying case is not included and you have to buy it separately. Harman Kardon Onyx Studio 4 comes in a premium-looking box along with a charging adapter (2 wall adapters for EU and US market), user manual, and 1-year warranty. Official video – Harman Kardon Onyx Studio 4 If you are looking for the most elegant and best sounding portable Bluetooth speaker under $150, you won’t find a better choice than Onyx Studio 4.

Can be paired with up to 100 Onyx 4 speakers.

Great sound quality, very balanced sound.

If you need something rugged and waterproof, you should look elsewhere. You can use it outdoors since it’s portable/battery-operated but it’s not rugged enough. This speaker is made of premium materials and looks/feels expensive but it’s not rugged enough and it’s not the best choice if you need an outdoor Bluetooth speaker. Most of our complaints are related to battery durability (this beautiful speaker needs some stronger battery) and build quality. There’s a bunch of reasons to buy Onyx Studio 4 – rich, powerful, and balanced sound, amazing design (one of the most elegant speakers on the market), Bluetooth connectivity, great connection quality, multi-host (connect up to 2 phones simultaneously) and daisy chaining features (connect up to 100 speakers together), built-in battery, built-in microphone, HK Connect app. Harman Kardon Onyx Studio 4 is one of the best sounding Bluetooth speakers under $150 on the market. When you buy through links on our site, we may earn an affiliate commission Learn More

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