Also the owner of the Harman kardon go&play.
The speaker confuses you in sound at first, because when you first hear it, the sound quality is very dull.
Luckily, I cut it off and thought to download its app and now the sound is almost excellent with the simple settings that the equalizer gives you.
Think that I was ready to return it because of the huge difference in sound quality with the go&play.
Between the two, which I consider to be the top portable speakers I have ever had, I have to say the following...
The go&play is an all-terrain speaker that will simply leave you satisfied outdoors, while indoors it almost breaks glass and sounds crystal clear, both in terms of sound and bass. And you constantly think of carrying it with you because it fits relatively comfortably in the trunk of the car.
The boombox 2 is also an all-terrain speaker but it is not very practical due to its large size and weight.
It discourages you from constantly moving it in all your activities (e.g. on the beach volleyball court where I engage).
As a sound, it is slightly inferior to the Harman Kardon, but if you don't have both to compare, you won't notice it.
The bass is impressive for outdoor use, compared to the go&play which is simply satisfactory (clearly I have not regretted a moment when I bought it and I still have it).
However, it is worth transitioning to the boombox 2 because it is a (in my opinion) complete portable speaker where, due to its long battery life and subwoofer, you have to sacrifice volume and weight.
I hope I helped.
(I returned the specific one I bought because it had a construction problem. It was creaking on one side when I played some dance progressive tracks with just 50% volume. I will get a refund and buy the same one from another store to see if it was indeed an isolated incident or if it is made that way, so we might have a problem then. I will come back with an update)
Update...
The second speaker from another company has arrived, purchased this time.
It shows the same construction problem, but on the other side this time. In the previous speaker, it was heard from the left, now it is heard from the right.
Try the music track "Baba city" (original mix) and go to 01:20. I, for one, am returning this one as well (unfortunately) and luckily I didn't rush to give away the go&play that I have!