At normal listening volumes (70-90%), you get about 5 hours of playtime from either speaker. Not terrible, but unspectacular to say the least. Connect two Harman Kardon Onyx Studio 7 speakers together wirelessly for an even better listening experience. Manufacturer’s description In other words, Onyx Studio 6 isn’t the most waterproof portable speaker on the market — but it is much better than the Onyx Studio 7.

When the device is being used in a stationary position, I think I prefer the styling of Onyx 7. But for portability, Onyx 6 makes a lot more sense. The speaker only supports SBC encoding meaning it isn’t compatible with higher-fidelity codecs like AAC or AptX which is significant for a speaker at this price. It’s also only compatible with Bluetooth 4.2 which is a bit behind the times with Bluetooth 5.2 releasing in 2020. Battery/Features As expected, at maximum volume, the figure is reduced to around 4 hours. This is usual, since the brands always give the battery life figure using it at a volume around 50%. As we’ve said before, we don’t think you’ll need to use the maximum volume to enjoy your music at home. The speaker also has no lights or other power-hungry extras.Generally, a bluetooth speaker will score well for battery life or score well for portability. Onyx Studio 6, sadly, doesn’t rate well for either. The combination of a heavy speaker with an unimpressive battery just doesn’t excite many users. The timbre of vocals is quite smooth and clear, with a fairly wide soundstage. The reproduction of high frequencies is also very good. With this speaker you will be able to enjoy any kind of music.

The design is the standout feature here, it’s like nothing else in the market and has a unique look that’s artistic and also functional. Neither speaker has an equalizer, and neither is compatible with aptX. As mentioned above, firmware updates utilize the USB port on the device. Both speakers are built with some plastic construction, aluminum handles, and fabric covering the speaker. They aren’t the most durable bluetooth speakers you can find, but they should hold up well to frequent use.With 8 hours of battery life, you are not dependent on cables. Experience the freedom of music anytime, anywhere. Wireless Dual Sound