Iich have 3 of those things for my daughters. From time to time you have to warn the girls to not to turn these things out loud, lest the whole house is sonicated. You play from your PC via online and via mobile phone by Bluetooth. In both cases, you can turn up quite loud, even though these things will no longer sound nice. Thus, I do not vertshee the reviews that complain about lack of volume. However, I was also disappointed at the initial start of volume and sound, until I discovered by chance that attached to the right volume and tone controls. Perhaps that's one reason for some bad reviews here. Or the people had broken equipment. My 3 are all (to) loud. Sure, the bass is not very transparent and dröhntbei high volume. But as a PA for a girl-rooms and the offer price (40) more than good enough. Bluetooth works with all mobile phones so far no worse than other cheap 2.1 parts but also with Bluetooth, which was an important purchasing criterion for me.
To date, easy Bluetooth connection wit all Android phones from my girls. As always after a few months scrap anyway by constantly and unplug and muck their headphone outputs on cell phones, I find a wireless connection important. On line in the PC depends. Also most of Spotify & Co. If the Line-in depends no device is actually in far turned up the volume a distinct humming sound. Not so with an attached device. We do not need USB and SD card playback function. Hence not getetstet.
