the box Six Mix

Pros: many inputs and outputs, EQ and FX independent for each input, Great for karaoke or playing live music at home. It even supports a bluetooth connection and it has a player for USB sticks and SD cards (mp3 and wav formats only).

Cons: One of the two speakers I bought had 2 out of 4 VU-meters leds dead. The sound of the 6'' woofer is not great - when connecting a microphone, you will miss the low-cut filter. Probably the 8'' version sounds better.
Some of the features of this product are not designed to work in stereo. When your input is Bluetooth, speaker 1 will receive a stereo stream, but will play it obviously mono by merging the left and right channels. Speaker 1 could forward signal to speaker 2 - but the pair doesn't know how to split left on one speaker and right on the other one. JBL EON can do this (check their 'Bluetooth True Wireless Stereo Pairing' feature).

I returned the pair to Thomann and ordered a different brand.