HiVi-SwansOS-10 HiFi Stereo Speakers, Bluetooth 5.0 Active Computer Bookshelf Speakers - 4'' Dynamic Woofer, Powered Desk Speakers 62w RMS with Touch Control for PC/Phone/TV

I don't usually write reviews, but the Swan OS-10 speakers absolutely deserve one. These compact bookshelf speakers pack an outstanding punch for their size and price. The soundstage is impressively wide and immersive, with excellent presence, clarity, and detail. Whether I'm listening to music, gaming, or watching movies, the OS-10s deliver rich, accurate audio that belies their size. They truly punch well above their weight class.Now, aside from the amazing audio performance, I want to highlight the exceptional customer service I received. I initially ran into an issue with the touch control system—specifically, I lost the remote. Unfortunately, Swan didn’t have a way for me to purchase a replacement remote at the time, and due to high tariffs, shipping the entire unit back for repair wasn’t realistic or affordable.This could've been the end of the story, but it wasn’t.Swan’s support team, went above and beyond. First, they offered to send me a returned unit with a working remote, though it would take time to reach me. But then, Swan took it a step further and arranged to send me a brand new set of OS-10 speakers—no strings attached. I was floored. That level of service is rare these days.This experience just reaffirms why I’ve been a loyal Swan customer for years. I bought my first pair of Swan speakers, the M200MKII, back in 2012, and they are still my main PC speakers after 13 years of daily use without a single issue. Swan builds products that last, and more importantly, they stand by their customers.Incredible value. Superb sound. Decent build quality. And now, confirmed top-tier support. Swan continues to impress.

Disable "Absolute Volume" for more granular volume control. Out-of-the-box it goes from too quiet to too loud in a single step.By default your device syncs the volume steps with the speaker's internal volume steps. When you press volume up on the device, the speaker's internal volume takes one step up. Similarly, when you press volume down on the speaker, your device's software takes one step down. The problem is that the speaker doesn't have enough volume steps for granular control! Within a single step it goes from too quiet to too loud for me. The solution is to disable "absolute volume" on your device. Your device will continue to use it's many, fine grained, software-volume steps. The speaker will continue to use its few, hardware-volume steps. Essentially you have two, independent volume controls layered on top of each other. The upside is you now have super fine-grained volume control. "Absolute Volume" can be disabled on Windows, Linux, and Android devices; the option isn't available on my Mac. I don't have an iPhone to check, but from searching online it looks like the option isn't available either. Apple knows best /s.

Absolutely fantastic. Using toslink connection to PC, have not testing bluetooth connectivity yet but the optical connection is astounding. Lacking 1 star because the sound stage sounds a bit condensed, not muddled just not as broad as expected. This was a very hard consideration as the sound is astonishing but I have been conditioned to have a viewable source selection. Thankfully the remote has buttons to select each individual input, but I still would have liked to have an visual indicator for what source is selected.

These speakers are breathtaking. I've tried them in two different setups: near-field listening on my desk and on top of ELAC bookshelves with speaker stands. To get the best sound, I recommend placing the speakers on stands and giving them at least 2-3 feet of space from the wall for the rear ports to breathe.For near-field listening, they have detailed and clear mid-range. The treble can be a little fatiguing at this distance, but that can be solved through equalization. Despite the small size of the speakers, the low end is surprisingly good. 80Hz-100Hz is punchy and detailed. 60Hz-70Hz is where it starts to drop off, but it’s still audible at this distance. 40Hz-59Hz drops off harder and is much less audible. Below 40Hz is pretty much non-existent. But what more can you expect from little 4” woofers. Overall the sound signature is quite flat, which I like. As far as imaging and sound stage they are very impressive, they are quite wide with instruments and vocals that don't sound like they're coming directly from the drivers.When placed on speaker stands, the extra room and distance greatly improves the sound quality, making the speakers sound even more impressive. The treble fatigue is reduced, and the low end is improved. The imaging and sound stage are greatly enhanced, and the speakers truly sound massive. Simply incredible.I've connected the speakers in three ways: RCA from my ifi Zen DAC V1, S/PDIF optical from my PC, and Bluetooth. How do each sound? Well, as far as purity, technically optical should sound the best as these speakers use a DSP crossover. So sending them an analog signal is going to get converted back to digital, then the crossover will be applied, then the speaker's internal DAC will convert them back to analog. Personally, I hear no difference between RCA and optical on these speakers. Bluetooth sounds just okay, I believe it's using the AAC codec, though it could be aptX, so it's not going to be as good as LDAC or other Hi-Res codecs.I encountered an issue where the speakers would emit a low-frequency hum if they were turned on and set to the AUX input while the DAC was off. However, since I keep my DAC on all the time, this won't be a concern for me. If this humming sound bothers you, you might want to consider using optical, coaxial, or Bluetooth instead.One thing that would make these speakers even better is if they had an LFE output on the speakers for a subwoofer. But if you use RCA, you could buy a splitter, pass one to the speakers, and the other to a powered sub that has line in. You would need to have a DAC that can act as a preamp otherwise you would have to change volume on the speakers and the sub which would be annoying.My reference speakers are the ELAC Uni-Fi 2.0 UB52 and Emotiva Airmotiv SE12 with the topping E30 DAC and Yamaha as301 integrated (I wasn’t using the sub for the comparisons as it wouldn’t be fair.) The OS-10s are impressively close in terms of sound quality, with nearly the same imaging, sound stage, and detail as the ELACs. The 100Hz-130Hz range on the OS-10s is actually cleaner than the ELACs. I blind A/B’d between the two and was stunned as there is very little difference. If the ELAC’s are 100% in terms of overall quality then the OS-10’s are 97%. It’s unreal. As Zeos said in his video, if these cost $400, they would still be worth every penny.Note: If you prefer neutral sound, you'll love these speakers. However, if you're a bass head, these speakers may not be for you as it's difficult to connect a subwoofer.My overall ratings based on the price:Sound quality: 10/10Imaging: 9/10Vertical off-axis Imaging: 9/10Horizontal off-axis Imaging: 8/10Sound stage: 9/10Instrumental Separation: 9/10Low end: 9/10Mid range: 10/10Treble: 9/10Features: 8/10 (LFE out would make it a 10)Remote: 8/10 (It works, but you need to point it within 10 degrees of the IR receiver)Value: 10/10Build quality/design: 10/10Overall a 9/10, but considering the sheer value, they are getting an easy 10/10.