After one week of extensive use I want to share that I’m super happy with it.
This speaker is a joy, I really cannot understand all the rage against it that I saw online!
Sound is really nice for its size, and very loud too if you want.
Looping and playing (yes: playing!) with audio (line, bluetooth, radio) it’s so fun and addictive,
It’s an easily approachable interaction with audio material, and all my family loves toying with it, children and grown up.
Battery life is great, I used for several hours this week and I’m still on the first charge.
Just curious about TE’s future plans for the OB-4!
EDIT
Pro tip:
Try listen radio at +0,1 speed and enjoy the ominous soundtrack.
Another thing I like is plug my Sony Walkman into the OB-4 line input and play cassettes at half speed (+0,5)