FX-Audio FX03 USB C DAC 384Khz DAC Decorder USB-C to RCA Digital to Analog Audio Converter Support DSD 256 PCM 32Bit for Set-top Box,Mobile Phone,Computer,Game Machine

I will be as thorough as I can regarding this DAC. I originally was using a PROZOR 13 dollar DAC that i connected to my pc through optical. Then the analog audio would pass through to a Fosi T20 tube amp. This setup was perfectly capable of running my Hifiman He-x4. However when I upgraded to the HE-560 V4 I noticed that my amp was no longer sufficient to drive these headphones. So after doing a little asking around I determined the issue was the PROZOR dac, prompting the purchase of this unit. Upon first installing the FX-03 I noticed a huge increase in volume and drive, my headphones now sounded the way they obviously were supposed to the entire time. I enjoy the minimalist look of this DAC, as well as its compact size. One issue I did have is that the USB it comes with is not very long and using other cables can lead to instability issue, however I had a compatible one that works fine and is long enough. I recommend this DAC, it offers some serious bang for the buck.

This little guy... Yes!I have had issues for years (literally) with hearing audio feedback (while on any gaming PC) I assumed from the GPU. I even tried upgrading to better and better speaker setups hoping that noise filters would provide better quality.Anyway, I CAN hear the audio difference so the conversion is there. Note that it's not louder, just... Cleaner (?).The feedback I have experienced for-EVER: completely gone once I powered this DAC on.Speaking of power, I had initially used a C by C cable and for some reason the DAC wasn't powered, but it did come with a USB by C cable which immediately illuminated the Power light.After that, plug'n'play Windows 11 immediately recognized it (all-be-it, as headphones) and I was able to use it with no further effort on my part.It doesn't take up much room, but make sure you place it where it can vent heat since it did get warm to the touch (not hot) so it doesn't get ruined.

Instantly recognized by my macbook. Perfect clarity from laptop to DAC to amp to headphones. Maybe this is a hot take, but if you're looking for a DAC to connect an amp to your computer, you do not need anything more than this, even at audiophile levels. This is designed to do one job and it does it perfectly. Build is great. It's tiny and unintrusive, but still looks great wherever you find a spot for it.

I wouldnt recommend it, unless you need some 1-time use thing. Doesn't seem to work anymore. I have this mounted under my desk and it never moves. But, i can unplug/replug this back in several times and it will sometimes come back a minute then the audio starts to dip out, or the interface disappears in windows.UpdateSeller reached out to me. Had me try a bunch of things to see if it worked. Nope. Defective unit. Wants me to go out of my way 45 minutes to a nearest UPS to ship back for a 40 dollar unit. No I would buy something else

I ordered this because I was intrigued by the idea of a hardware DAC that could decode DSD audio from my Linux laptop - for 50 bucks. It turns out that it actually works, but you do need some Linux skills to get it going initially. The DAC itself is a tiny, nondescript metal box with a USB input, RCA audio outputs, and three indicator LEDs. It's well finished and does not look cheap.I'm been aware of DSD and high res audio for a number of years, and have a few DSD files that I play with software decoding under the program Deadbeef, but this is my first experience with hardware decoding.The PCM decoding portion of this DAC worked under Linux Mint immediately upon being plugged in. Excited by my luck, I then tried playing a .dsf file to test out DSD playback. Hmm. The PCM light was still lit. This caused me to go down a bit of a rabbit hole, and I ultimately succeeded in getting DSD64 playback to work. I have not yet tested DSD128 or DSD256 since I don't have any files of those resolutions, but the software I am using should support up to DSD256 (not sure about the DAC).A fork of a little program called dsf2flac is the initial part of the solution I used. It works from the command line, and I had to download and compile it to get it installed. Search Github for dsf2flac.dop.dsd256 and you'll find the tool and instructions.That program lets you convert your DSF stream into a WAV file all the way up to 24 bit and 705,600Hz. It also handles DoP conversion, which is what enabled this FX-Audio DAC to read the DSD data stream coming from my laptop. The catch is, that by default, it writes out that stream to a separate converted file. That's not friendly. Too time consuming.It turns out you can do the DoP wav conversion in real time right to the DAC by piping output to ffmpeg. Details of that are near the bottom of the Github page I mentioned. You'll need to identify the ALSA device name of this DAC and use it in the command line to decode the DSF file and pipe it to the DAC.By now, the Windows and Mac users are frothing at the mouth, and I'm not sure I blame them. A sample command on my machine to play a dsf and output the stream to this DAC looks like:dsf2flac -d -r 176400 -i [FILENAME.dsf] -o - 2>/dev/null | ffmpeg -i - -r 176400 -c pcm_s32le -f alsa hw:1I'm not a programmer, but I'm going to see if I can kludge together something to make this a little more graphical. The good news is, that if you're persistent, you can actually get hardware DSD playback on Linux for the tiny sum of $50. That's quite a milestone, kudos to FX-Audio for making it possible!I'm happy with this DAC, and it can only get easier to use it with Windows, so if you want to get DSD playback on the cheap, give it a try!

So far this little DAC is delivering great sound from a laptop to a vintage Sansui receiver. Who would have thought this 37 year old Sansui could sound so good. Can't comment on longevity yet, so maybe I'll update, but for now I'm giving this 5 stars for incredible sound at a very reasonable price. Simple and effective.

An outstanding high resolution DAC chip married to a state-of-the-art USB controller chip. All housed in a VERY tiny case fits easily in the palm of your hand. At $50, this is an amazing value. Audiophile specs on a beer budget. Buy two! :D

Does the job of a much more expensive model.