FiiO KA11 USB C to 3.5mm Audio Adapter 32bit/384KHz, USB Type C Dongle HiFi DAC Amplifier for Android/iOS/Windows/Mac (Black, TC)

Fantastic DAC for the Price – Plug-and-Play Audiophile Boost I’ve been using the FiiO KA11 with both my iPhone 15 Pro and a Google Pixel, running it through a USB-C splitter—and it works flawlessly. It was completely plug-and-play, no setup needed. I tested it across multiple apps—Tidal, Spotify, Apple Music, YouTube, HBO—and it delivers excellent sound consistently. The clarity and depth really shine, especially when paired with my CCZ Melody and Moondrop Chu2 IEMs. The iPhone’s EQ settings (I love the Late Night preset with the Melody) take it even further. It does warm up after about 15 minutes of use, but I didn’t notice any unusual battery drain. I have over 100 hours of use out of mine so far. Build quality is rock solid—it feels heavier and more premium than you’d expect for a $33 dongle. If you’re looking for a compact, high-quality USB-C DAC/amp that just works and sounds fantastic, this one is well worth it.

I originally bought this to try out on my PC, and while it works great for it (I can play at a much higher sampling rate on top of louder playback), what stunned me was how great it works on my phone. I didn't think it would make much of a difference on my phone as it already has a headphone jack, but I was wrong. Yes, it makes it louder but there's so much more to it than that. It sounds AMAZING at higher levels, with zero distortion even when the volume becomes painfully high. This is such a superb value for what it does. There's a drawback, and that is when I use it on my headphones (but not the PC) it gets pretty hot. In fact, I had to return one because it would stop working when it got too hot. But I've put its replacement through its paces and so far it hasn't had the same issue. It's just something I'd advise people to keep an eye out for. Otherwise this is a stellar product and I highly recommend it.

Got this because I wanted a little more volume and quality than the basic adapter affords, and for that it's great! The sound quality was fantastic and volume was great. Which is about where my praise ends. 3 months after I got my first ones, they stopped working. I assumed it was a fluke since everything else about the product had been fine leading up, and the return window was still open, so I swapped for a new one. 2 months later, broken again and the return window has closed. Decided that since I couldn't return it I'd break it open to see what went wrong...two of the wires were attached with hopes and dreams and had come loose over time. Way too expensive to be this flimsy- if you want a product like this, find an alternative or pray for an infinite return window.

I can't believe how good this sounds! It's a clear upgrade to the Apple USB C DAC, and honestly for most of my headphones it's on par with some of my other powered headphone amps. I'm using this with some Grado SR60s, which I can't believe I'm using on an iPhone. It gets a little hot though, which means it's probably a bit power draw. I haven't measured the change in battery life, but I'd guess it's a bit more than a typical set of headphones.

Good sound quality and has a great build quality. The dongle feels more premium than Apple's USB-C to 3.5mm adapter. It is similar length to the Apple dongle but slightly longer. It is definitely wider than the Apple dongles though. My only complaint with this adapter is the small LED light that stays illuminated when receiving power from a single device (plugged into my iPhone 16 Pro). You cannot turn this light off and it is quite bright in the dark (I like to listen to music to fall asleep).

I'm using it with my sony wh-1000xm6 and the sound is amazing. Value for money and great deal. Easy to transport and use with the app to get better options of settings. Fit perfect and functionality is 5/5

The Fiio KA11 Is pretty damn good. You will be able to hear your content on your smartphone or USB audio provided laptop. Just remember that Android sets it audio to 48 khz + Windows 11 will select its own preferred level, but it can do like it said. 384 khz at 32-bit audio. Also, your headphones might also tell the dongo what its capabilities are in the audio chain. And yes you can use the fiio control app to change the settings of the filters and other information and if you have older technology that uses UAC one, you can switch it from UAC 2 to comply Or to use the audio in the classic way that Windows allows you to? I haven't done it with Android yet. But if you do switch and then switch back. Just remember you have to delete the profile of the dongle in the app and then reconnect + restart your Android phone so it gets a fresh connection of the dongle when you switch between UAC one and two. This headphone dongle also provides you with better sound quality than a lot of cheap dongles, especially if you're still rocking the old pixel dongle from several years ago. Basically it's like connecting your head headphones or iems to a amplifier because you Can get a high volume of audio without needing to jack up the percentage to maximum. I find that on the pixel 9 that 80% is a sweet spot with the ka11. Also if you have good headphones these can power easy the drive headphones as well as hard to drive headphones. The sound quality is Is a little bit warm. Warm but not overpowering the bass frequencies which is good for a heavy dialogue content like traditional television programming. The ka11 can accept modern programming audio as well as audio from standard stereo and mono audio as long as it's from a digital source that it can process into analog. Sometimes if you're watching YouTube, you noticed a lot of semblance but that's because of the way the video was recorded, not because of the dongle. Also it is power hungry so it might drain your battery a little bit. The compatibility is with USBC devices. The connection quality is pretty good. This dongle is small enough to fit into a pocket. This is an audio product so there is no picture quality issues. UPDATE my ka11 dongle died basically 4 months later. I heard a pop sound and then my pixel 9 stop sending the dongle power because light wasn't even on. I troubleshooted like restarting the phone, putting it in safe mode, turning on and off the USB C Audio routing nothing. At least on my Asus a16. It did send power to the dongle but it had trouble with the handshake + flickering of the LED + for a moment it connected but it had trouble changing the audio quality. It struggled to change from cyon to yellow. Of your own free will be aware that the ka11 has multiple users across many use cases has seen this audio dongle fail on them. And no, this wasn't a upgrade issue because this was already with the newest upgrade directly out of the package. Most likely a capacitor or some other a component failed because the dongle probably got too hot too many times. I used my fiio ka11 nearly daily too. When it did work it worked pretty good with the good sound quality For my edifier W800BT plus headphones. Remember this is a lower budget dongle. Update 2 just wait several hours because the dongle either is doing a protected mode AKA overheating or had moisture in the device, especially if you were outdoors or it might be stressed out from an overload. But usually waiting several hours or overnight usually solves the issue of the dongle blinking and not behaving correctly and connecting so I raised my score back up to four stars. Most people that think it's cheap or defective might have thrown away. A perfectly useful device once it dried out or cooled off. 3rd update: I just paired these with the edifier wh950nb b. Gen 2 and the fiio ka11 actually make the headphones work extremely well especially in passive mode when the headphones are turned off and not using the DSP. Basically it's unrestrictive and because of the headphones are easy to drive. Sometimes you may have to lower the volume to like 35% to 50%, especially if you have a hot signal like from TuneIn Radio or a high quality audio stream like from Spotify or music choice app. But then when you use the wh950nb Gen. 2. With it on the dsp limits the what the ka11 can do. But the only major reason you would want the headphones turned on. Is it you want a restrictive sound signature or use the ANC on the edifier wh950nb Gen 2 headphones. Make sure you use the fiio control app to change the filters of the ka11 because it also changes how much base and treble is coming through in off wired mode . Just remember that the wh950nb Gen2 can use all the frequencies that the ka11 can provide if not restricted by the DSP. So an extra few dollars for this High-Res USB C to 3.5 mm dongle can make your life much more enjoyable with your headphones, especially if your headphones are certified hi-res and hi-res wireless. And like I said, the ka11 can output a lot of power into a good pair of headphones like the wh950nb Gen 2 if you'll allow it. Final update: The fiio ka11 died yesterday May 8th 2026 and I had purchased it on September 20th 2025 from Amazon. Now it just lights up the LED and basically there's no data handshake anymore and both my pixel 9 and the Asus a16 tuf AMD advantage gaming laptop from 2023 cannot detect the proper handshake of the ka11. The computer can detect that a USB device is connected but it can't determine what it is anymore. Otherwise it worked perfectly like I said before except for an issue in October when it overheated. And no it's not my technology. That's default because my Google dongle you know the white one that came with the pixel lineup like during the pixel 2 and 3 era still works but is it not high-res audio quality.

Highly recommend this DAC. When the CD changer in my 2008 Honda Accord quit reading CDs I wanted to be able to listen to something other than just the radio. I have Spotify premium and an iPhone 15, and this is how I listen to music 99% of the time. Only problem, the car stereo was made just before Bluetooth became standard, so I couldn't stream to the stereo that way. The solution? Simply use the Aux jack, but OF COURSE the headphone jack had been retired a long time ago by Apple. The solution? A DAC that could convert the digital signal from the phone's USB C port the analogue signal to be sent to the Aux jack (or you could use your favorite wired headphones if you want to do that.) This worked GREAT...as a church cantor, sometimes I'll listen to a recording of the music I'm going to be singing that week in the car, and the choir vocals are clear, the pipe organ rich and full. Keep in mind this is simply being sent to the OEM stereo of a 2008 Honda. I can imagine how awesome it would sound if I actually had a quality aftermarket stereo in that car. It also reveals that car manufacturers often cheap out on the DAC portion of their sound system. Anytime you stream Bluetooth, play a CD or plug your phone in using USB to your car's sound system, that sound system has to do the conversion from digital to analogue requiring a DAC inside the unit to perform that job. If that DAC is poor quality, you the sound will be lot thinner, not as detailed and less balanced. However, you can skip the car's DAC if you do that conversion from your phone into a device such as this and then plug an aux cable into the aux jack of your CAR. This means you're only making use of the CARS analogue amplification, but you fed that system a much higher quality sound to begin with. Sure, you can get the one of the el cheapo DACs that sell for $5 but you'll get what you paid for. Bass will be weak, sound far less detailed. Your car's DAC may even be better in this scenario (assuming you can plug your phone into a USB port in your car, an option that is not available in the 2008 Accord.) Get this device and find out what you've been missing in your recordings. Oh yeah...I also recommend this Aux cable if using in your car: https://www.amazon.com/dp/B08BFRFJQJ?ref_=ppx_hzsearch_conn_dt_b_fed_asin_title_1&th=1

Muito bom

Çok iyi.Baya sesi fark ettirdi.Hemen da elime ulaştı.Teşekkürler.

Erst ein paar Stunden im Einsatz, aber klanglich voll zufrieden! An einem guten Kopfhöhrer war ich sehr begeistert vom Klang. Plug & Play hat an einem iOS Gerät sofott geklappt. Das Gerät erwärmt sich im Betrieb leicht, ist aber sehr handlich und fällt durch die runde Form an einem Kabel fast nicht auf.

Sheeezzzz!!!! I am now going back to wire headphones 😁… sounds louder & better! clearer vocals! and mid-range are top caliber. Thanks to this bloody gem! This is a must to all Headphones! Gen. X’s let’s volt in! So easy to set-up, just bloody connect to any latest mobile phone devices and that’s it. I’m using my Sony’s WH-1000XM6 Headphone + connected to my iPhone16 Pro Max. Just a reminder, you can’t use or connect to Sony’s Sound Connect app when using your FiiO KA11 USB dongle. But I think you don’t need tweaks for EQ to get a better sounds. The sounds coming out are great. I am so thrilled & overjoyed having this! Best Buy indeed.

Tiene muy buena potencia, y no parece lo que hace. Lo utilizo con Simgot EW300 y va de lujo. Se calienta un pelín pero nada preocupante