Features:

  • Converts coaxial or optical digital audio input to analog stereo output over RCA and 3.5mm mini jack
  • Supports all popular sample rates including 32kHz, 44.1kHz, 48kHz, 96kHz and 192kHz, at up to 24-bit resolution
  • MS8416T digital receiver chip
  • Switch selectable coaxial or optical input
Great budget DAC

I ordered this to replace another brand of inexpensive DAC which I owned, because the other unit had terrible performance measurements (which, incidentally, were clearly audible). I have owned several pieces of FiiO gear in the past and liked them, so it seemed a low risk. This inexpensive little box does a great job. Through the optical input it has very very flat frequency response and low distortion across the audio band, and respectable maximum analog output of 1.25V before clipping. It was all I needed for the system in my office and I'm not disappointed. Be aware that it is designed for PCM stereo audio only and not Dolby or other multichannel systems.

Perfect Optical out solution for your TV to amplifier.

This solved my noisy headphone out on the TV to the the Yamaha amp. The instructions are almost unreadable due to the size but hook up is relatively simple. Run from USB or included power adapter, attach optical cord to the TV and run to the audio input on the amp. Make sure your TV is set to PCM as this will not decode Dolby Multi channel. Stereo Only. This gem has cleared the buzz and delivers a clean image. Voices on video has cleared on all sources. My daughter thought there was a thunderstorm but it was The Star Ship Enterprise rumbling during a Bluray test. Streaming from the Roku sounds just as good (depending on the source materiel) I run all thru the HDMI to the optical out on the TV and quite satisfied with the performance. Side note: Use Amazon Locker if you want to avoid porch vermin stealing your orders.

The greatest computer sound solution I did not know

I'm very satisfied. I had a high-end soundcard (HT OMEGA Claro Halo) on my previous computer and got spoiled by it. When I got a new computer recently, I had the full intention to remove that soundcard and install it on the new computer. But it was too late when I discovered that it was a PCI card, and the new motherboard did not have a PCI slot. It seemed that the only option was to spent $250 to buy a similar high-end soundcard with PCIE. Needless to say, I'm glad to discover this product. A $25 solution versus $250. The sound quality of the RCA output is every bit as good as HT OMEGA Claro Halo. I expect the output from the 3.5mm mini jack to be the same quality, although I have not tried it yet. Compared to the internal soundcard of the new computer, this is a day and night difference. The noise floor is much lower, and the sound quality much better. But note that converting digital signal to 2-channel analog output (RCA and 3.5mm mini jack) is the only thing this product does. If you have a reasonably good internal soundcard that has optical digital output, and the only thing you need is high quality 2-channel stereo sound sent to an amplifier/speaker system, this is the perfect solution. HOWEVER, this is NOT a replacement for a good soundcard if you need the features such as microphone input, line input, headphone amplifier and 7.1 channels which are standard on a modern soundcard but not offered by FiiO D3.

FiiO D3 (D03K) Digital to Analog Audio Converter

Includes power supply (110V in and USB out) with long extension cord and a 6 ft optical link, so it fits well with my layout. This is what I was most worried about. Easy to put together, and the sound quality is great on my SennHeiser wireless earphones. I have a Samsung TV, so I had to change the settings for the Digital Output Audio Format to PCM, as required by the FiiO D/A Audio Converter. I use my SennHeiser earphones at night, during my insomnia episodes so as not to wake my wife. I previously had the earphone transmitter plugged into my AT&T tuner, so I couldn't get sound from the apps on the TV, such as Netflix, Prime, HBOGO, etc. Now, I have the earphone transmitter plugged into the optical out put of the Samsung TV, and I can get any output produced by the TV. Note that I mute the TV. This does not affect the digital output.

Works fantastic!

Works fantastic! Set up the audio on your TV to PCM output (not bitstream), connect the Toslink optical cable from the optical out on your TV to the optical in on the FiiO D3 adapter, connector either a 3.5mm audio cable or the L/R RCA cable to the FiiO adapter and then connect the other end to a Bluetooth transmitter, pair the transmitter to your Bluetooth headphones, and - BAM - you have crystal clear audio on your headphones from the TV. Now we can listen to the audio of our TV programs through the 2.1 channel soundbar system, which is connected to the HDMI ARC output on the TV and the HDMI input of the soundbar, and if she goes to bed and I want to watch something without disturbing her, I can turn off the soundbar and put on my headphones, connect them to the Bluetooth transmitter, and I can listen to crystal clear audio with the headphones without disturbing anyone else in the house.

A Profound Improvement Over Bulit-In TV Audio

Audio for our largest TV runs through a pair of high-end, self-powered studio monitors that I've owned for many years. With the right signal, the speakers are loud, punchy, and transparently 3D. Recently, we inherited a three-year old Vizio E-series LCD TV, which I connected into the audio system using the TV's analog RCA outputs. Both my wife and I immediately noticed that the audio sounded dull and lifeless, no matter what the source. As familiar as I am with the monitors, I suspected that the D-to-A converters in the Vizio might be mediocre and began searching for a solution on Amazon. It didn't take long to find the little FiiO box. Given its positive reviews and reasonable price, it was an easy decision to place the order. I received the unit yesterday, connected it to the TV through the optical cable, and set the audio on the TV to output two channel PCM. The improvement was instantaneous and dramatic. Whether presenting music or the sound effects of an action film, the audio was expansive and incredibly detailed. Big and bold, yet still natural. Unless you know that your TV or AV receiver has high-end converters, I wholeheartedly recommend inserting one of these nifty FiiO D-to-A converters into your signal path.

Easy to setup. Pretty much plug and play.

Included is the FiiO D3 Unit, a power brick for it, and a very thin feeling optical TOSLink cable from Micca (that worked fine, just doesn't encourage confidence). You'll need to get your own 3.5mm or RCA connector for the analog part of the connection. Plugged everything in and attached it to an older, 10+ year old JBL stereo system (which didn't have an optical in/out, attached via RCA cables) and a 1 year old Panasonic Viera TV (which did have an optical out, no analog out). No issues, pretty much plug and play and the sound quality is a large leap in quality compared to the TV. Power delivered by the FiiO D3 into the line-in on the JBL was also sufficient, didn't have to crank up the old stereo to an insane volume level to get sufficiently loud sound out. Also had a nice LED (that's not crazy bright, thank god) indicating connection status to the TV to verify that it was functioning and the optical line was engaged. There is a tiny bit of signal delay introduced with this unit (or its from my JBL stereo speakers, didn't test with more devices) that causes a noticeable echoing effect if both the TV volume are up and the speaker volume is up. Probably around a quarter second or so worth of delay. I didn't test different sound formats (DD, 5.1, 7.1, etc); only had it attached directly to the TV and the TV was set to stereo output. But more likely than not, if you're using this, you're only going to be using the audio out from this thing and not the original source. Extremely effective way of getting better sound out of a newer TV if you have some speakers lying around and don't feel like shelling out a lot of money for a new system/sound bar.

No Latency And Very Easy to Set Up

Basically no setup required other than to set my TV to PCM output audio. There is no latency/lag in the audio signal between the TV set and the audio amplifier sound output like we had previously experienced with an RCA sound bar system plugged into the same TV's optical port. Indicator lights are nice and discreet yet easy to see. I connected the USB cable to my TV USB port which powers it on & off when the TV is turned on or off. It has no volume control, but that is not an issue for our configuration. TV volume is independent of this unit in our setup. If that is something that would work for you, then this may be a good choice. I purchased it without the TOSLINK cable for a lower price -- a very reasonable price for the quality of the unit. Read a review on an audiophile site that listed this unit as an affordable option for high quality on a budget. Other products in this price range weren't mentioned there at all, so somebody wasn't as impressed by its competitors.

Get more than you pay for - not "Best In Show" but really "works"

First off, I'm an audio enthusiast but NOT an audiophile. In lieu of purchasing a sound bar for better t.v. sound I bought a pair of active SWAN speakers (w/ Bluetooth/WiFi). I connected the SWAN Bluetooth option to my Samsung UHD 4K T.V. and there was an immediate sound enhancement...I wanted just a little more so I got the Fiio D3 based on reviews and some YouTube vids. Just 2 days ago I received and installed it. (SEE PICS) I ran optical/toslink from the t.v. to the device and RCA to the main SWAN speaker. I also have an Auris bluME Hifi Bluetooth Receiver/DAC, (as you can plainly see), that I LOVE and have connected to the speakers via optical/toslink. Anywho - the general t.v. sound is definitely/immediately upgraded with the Fiio. This is a great little DAC for someone that doesn't want to/need to/can't spend a ton on a higher-end Digital to Analog Converter and is just looking for a bump up in sound quality. I 100% recommend this as a starter option before you get into Schiit, Topping, NAD, S.M.S.L. or other, gradually more expensive, DACs. Hope this helps someone a little

Great little DAC box!

I have a small project studio with a lot of pro audio gear. One of the ways I like to practice vocal work to get my pitch control better is by playing expert vocals on Rock band 4 with my Xbox One. I have a Focusrite 18i20 audio interface for my studio, and in order to get my Xbox One audio into it so I can hear it through my studio monitors, I needed a DAC to go from the Xbox One's optical audio out into my Focusrite's 1/4 inputs. So I bought this little gadget and connected a stereo RCA to 1/4 cable and plugged the 2 1/4 ends into the first 2 inputs of my Focusrite unit. Works amazing! I also cut down audio latency with the Rock Band mic by using this unit. Previously I had my Xbox One connected to my surround sound system, and after doing audio calibration on it, I was getting 200+ ms audio delay. With this little DAC box, that has been cut down to 70ms. Very happy with this unit, and I can power it with USB bus power right from the Xbox Box or my PC.

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