Jbl Radial Micro 2 Speakers

I was seduced by this product. The sound is great - not mega loud but easily enough for most sitting rooms. The USB connection has never worked. The power connection is "flappy" and unreliable. Now it wont play anything (just over a year old). sometimes it will start, but when i try to turn the volume up it stalls. Overall, it''s all fur coat, and no knickers. I am not impressed with the build quality.