People be thinking "it's very late 2017, this was it, Chris has released all reviews for this year". People be wrong. Chris has released a review of a small and very affordable Bluetooth speaker that I got as a gift, the EasyAcc LX-839. In theory, it sounds like an awesome little thing - cheap, Bluetooth, micro SD slot, AUX in, headphone (/line) out, built-in FM tuner. But in reality, it sucks quite a bit - the volume buttons share their function with the skip buttons, and the skip function has the higher priority, so you have to hold down the buttons in order to change the volume (the other way 'round would have been much more convenient). Then this stupid thing doesn't remember its volume setting after switching modes or turning it back on, and resets to a default high-ish volume setting. In addition, the line in is not a 3.5 mm socket but shared with the micro USB socket wherefore you have to use a proprietary cable (that is however included) for it. And last but not least, the FM tuner works only if you plug in the proprietary USB cable, since the stupid speaker has got no built-in antenna.
My extended thoughts on the LX-839 speaker can be found here, in German language, but as always with a translator widget below the navigation bar:
http://kopfhoerer-lounge.blogspot.com/2017/12/easyacc-lx-839-bluetooth-lautsprecher-review.html
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On a related note,
my original review of the Zorloo ZuperDAC-S was re-posted to Head-Fi:
https://head-fi.org/showcase/zorloo-zuperdac-s.22836/reviews#review-19645
..., as was my
original review of the Cowon Plenue J:
https://head-fi.org/showcase/cowon-plenue-j.22835/reviews#review-19637