The bass response is impressive for the speaker of this size. The low frequencies are present and punchy even at low volumes (maybe even slightly boosted).

Omni 10 is another example of Harman Kardon’s recognizable design. Omni 10 is as stylish as Onyx Studio 4 but it’s inferior in all the other aspects. The sound is rich and balanced, the bass is maybe even punchier than on Studio 4 but the overall sound quality of Onyx Studio 4 is better. Studio 4 features more powerful battery (longer playtime), it comes with the app, it has a greater Bluetooth range and more stable connection, and it can be paired with up to 100 other Studio 4 speakers. Omni 10 is significantly cheaper. Step 1 – Turn on the first speaker, initiate pairing (press the Bluetooth button) and pair it with your phone. You can stream your music to the first speaker now. The battery is not that small (3,000mAh) but there are four drivers inside (+ passive bass radiator) so the playtime is not really great. Harman Kardon claims that you can get 8 hours of playtime but you can actually get less than 7 at 50% volume (less than 4 hours at 100%). This great sounding speaker needs some larger battery. The whole front panel is covered with a fabric grille that protects the drivers. There’s a simple harman/kardon logo on the grille. The speaker has a built-in microphone (speakerphone feature) with some nice software add-ons (voicelogic + echo/noise canceling).Onyx Studio 4 can be loud but it’s not louder than some competitors within the same price range (like UE MEGABOOM or Marshal Kilburn). Owlee Aviary is similar to Onyx Studio 4 but there are some important differences. Aviary is cheaper and it delivers less impressive and quieter sound. If the sound quality is your priority, Studio 4 is a clear winner. They both have speakerphone feature and deliver similar playtime. Aviary features NFC while Studio 4 doesn’t. Owlee Aviary doesn’t support daisy chaining (can’t be paired with another Aviary speaker) while you can pair up to 100 Onyx Studio 4 speakers together. There’s no app for Owlee Aviary while there’s the HK Connect app for Onyx Studio 4. 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. Studio 4 is very much portable since it has a built-in battery and it’s not too heavy to carry around. So, if you want to use it outdoors, you can. But, be warned that it’s not very rugged and that the battery inside the speaker has the capacity of 3,000mAh. 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.

Step 3 – Press the Connect+ button on the first speaker and then press the same button on the other speaker. 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. There are also two undetachable feet that provide stability.Unfortunately, it’s not all that great. Most of our complaints are related to battery durability (this beautiful speaker needs some stronger battery) and build quality. 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. You can use it outdoors since it’s portable/battery-operated but it’s not rugged enough. If you need something rugged and waterproof , you should look elsewhere.