I was looking for cheaper speakers for my office computer and these have the ideal connectivity in my opinion - you connect USB to PC and they work, power and sound go through USB. There's a Bluetooth option and an aux-in for the uncle story. The inputs can be switched at any time with the BT button (someone wrote in the review below that this is not possible when connecting USB audio, but this is not true - according to the manual and my own experience). The aux-in is just a female hole, which is better than having the jack cable fixed because 90% of people won't use it and would just get confused. I measured the USB cable at a fair 110 cm (OK in my opinion), but if that's not enough, you can easily get an extension cable (unlike the fixed cable between the speakers, where it's not possible). Anyone who complains that they don't have a battery (which they don't) for use with a mobile phone, or that they are connected by cable at all and not fully wireless, I think misunderstands the purpose of this product - they are PC speakers. If they had a battery, it would die after a year or two anyway and I would have to go fully wireless - this way I plug them into the PC and ideally don't worry about anything for a couple of years. What is a bit of a question mark is the sound. They're loud enough, but there's really quite a lot of treble, probably partly because the transducers are pointed directly at the listener (the rotation has a big effect). Turning the drivers upwards is theoretically good, so that the sound doesn't bounce off the table top and comb-filtering doesn't occur, but for a speaker of this class it's completely irrelevant and they could have ditched it or made the slope smaller (but admittedly, it also depends on how and at what table you sit). I was surprised that when there are only a few instruments in the mix (guitar, male vocals), the sound has a really nice depth. Unfortunately, as soon as the mix gets richer and God forbid the drums are added (they're really bad), the depth disappears in a very noticeable jump. I found this effect most pronounced over USB audio, and I suspect that they have some "better" built in before the DA conversion that helps it in a sparse mix, but then doesn't keep up (or maybe it's just the effect of having more very noticeable highs in the mix that the depth can't be heard over, or that a more saturated amp can't produce). I found it a bit better over BT and best over aux-in, or the sound was the most consistent (even if I "fed" it to all inputs from the same PC, of course it is impossible to achieve that the signal going to all inputs is completely identical). What failed is the explanation of the gain switch function in the manual. From what I have found and tested, in position A (auto) it can tell from certified USB-C sources that the source can deliver 10 W, and it switches to Hi Gain mode automatically. When connected to USB-A (i.e. through the reducer) can not recognize it and by switching to the H position the person tells the speaker that the USB-A power supply can deliver 10 W, (i.e. 5V 2A) and allows him to demand this consumption from the power supply. So I would be careful not to manually switch to H when connected to a weak USB-A source, as theoretically there is a risk of overloading the source (damage) or unstable/insufficient power to the amplifier leading to poor sound quality. All in all, I guess I'll get used to them, it's enough for work, just don't expect miracles, as it might seem from other reviews here and elsewhere, and comparison with studio monitors I have at home was really not a good idea. Otherwise, I have no reservations about the processing or quality - as I wrote above, it does not hum, drones, rattles and does not fizzle until half volume. I'd give 3.5 stars, if it's not a half, I round up.
