---
product_id: 1467295
title: "D3 (D03K) Digital to Analog Audio Converter - 192kHz/24bit Optical and Coaxial DAC"
brand: "fiio"
price: "€ 115.00"
currency: EUR
in_stock: true
reviews_count: 8
category: "Fii O"
url: https://www.desertcart.sk/products/1467295-d3-d03k-digital-to-analog-audio-converter-192khz-24bit-optical
store_origin: SK
region: Slovakia
---

# 192kHz/24bit Hi-Res Audio Optical & Coaxial Input Switch 3.5mm & RCA Analog Output D3 (D03K) Digital to Analog Audio Converter - 192kHz/24bit Optical and Coaxial DAC

**Brand:** fiio
**Price:** € 115.00
**Availability:** ✅ In Stock

## Summary

> 🎶 Elevate your sound game—don’t just listen, experience every note!

## Quick Answers

- **What is this?** D3 (D03K) Digital to Analog Audio Converter - 192kHz/24bit Optical and Coaxial DAC by fiio
- **How much does it cost?** € 115.00 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.sk](https://www.desertcart.sk/products/1467295-d3-d03k-digital-to-analog-audio-converter-192khz-24bit-optical)

## Best For

- fiio enthusiasts

## Why This Product

- Trusted fiio brand quality
- Free international shipping included
- Worldwide delivery with tracking
- 15-day hassle-free returns

## Key Features

- • **Unmatched Value:** Premium DAC performance under $30—because high fidelity shouldn’t break the bank.
- • **Compact Powerhouse:** Ultra-compact design powered via mini USB, perfect for any desktop or home setup.
- • **Plug & Play Simplicity:** Instantly upgrade your legacy analog speakers or amps with modern digital sources—no fuss, just flawless sound.
- • **Audiophile-Grade Clarity:** Experience pristine 192kHz/24bit digital-to-analog conversion for crystal-clear sound.
- • **Seamless Input Switching:** Effortlessly toggle between optical and coaxial digital inputs with a dedicated switch.

## Overview

The FiiO D3 (D03K) is a compact, budget-friendly digital-to-analog audio converter supporting up to 192kHz/24bit PCM signals. It features optical and coaxial inputs with an easy switch, delivering high-fidelity stereo analog output via RCA and 3.5mm ports. Ideal for connecting modern digital devices like TVs, Blu-ray players, and game consoles to analog amplifiers or speakers, it offers low jitter and low distortion audio conversion powered by a mini USB adapter.

## Description

The FiiO D3 is a quick and easy way to convert digital audio output into high fidelity stereo analog sound. It is ideal for interfacing between modern digital audio/video devices with analog amplifiers or self-powered speakers. The D3 works with any playback source with an optical Toslink or coaxial digital audio output.Here are just a few of the devices supported: - Digital TVs and HDTVs - CD, DVD, Blu-Ray, and HD-DVD players - Apple TV, Google TV Revue - Game consoles: PS3 All, XBOX 360 Slim - Satellite/Cable receivers and DVRs, TiVO - AV Receivers and Integrated Amplifiers - Digital media players and streamers Feature Highlights - Built-in high-performance phase locked loop PLL - WM8805 ultra low jitter digital receiver - Supports up to 192KHz/24bit audio signal - Optical and coaxial inputs with selection switch - 2 channel standard stereo RCA output - Indicator for digital receiving status LOCKED - MINI USB power supply port AC adapter included Whats in the box - FiiO D3 - AC power adapter - Users manual Specifications - Power supply：DC 5V - Output amplitude：1.6V（0dB Fs） - Frequency Response：20Hz~20KHz - Signal to Noise Ratio: ≥90dB - Crosstalk: 75dB - Total harmonic distortion: <0.0110mW - Size: 61.6mm×49.1mm×21mm - Weight:50g

Review: Good Cheapie/fun DAC upgrade for Sonos and other devices - Well, here is a quickie review on the 3rd gen D03K that may help others trying to research for specific uses. For the $$ this nice little piece is a great, fun DAC. I am a big music library fan, with a nice networked music library ripped in bit-perfect wav files. I had added a Sonos Connect (ZP90) player to my not so bad of shop stereo comprised of some great, mid-fi, mostly outdated components laying around: PSB large format bookshelf speaks, HK analog Pre/Pro, Onkyo discrete stereo amp, decent interconnects, etc. This system has a pretty nice level of fidelity to where you can hear things and I was experiencing one of the only weaknesses of Sonos, their DAC is a little disappointing when playing on higher fidelity setups where you can hear such things. The analog outs on the ancient Sony DVD unit I was using to play CDs was slaying the Sonos in SQ. Enter the FiiO unit. Set Sonos to uncompressed (if your files are lossless), fixed volume out (for full bit depth), coax digital to FiiO/analog to pre. Yes!! The result is blacker background, increased precision, tightened yet solid bass, in this case it did cure the minor dissatisfaction of listening through the onboard Sonos DAC. Since I had both Sonos/FiiO connected to the amp, asked my audiophile in training kid to do a blind A/B (I level matched between switching, so there was a 4 sec delay) he chose the FiiO every time in random selections over a several minute period. So, not saying this will beat a Benchmark, or mod the opamps to TL^%$$^ or anything like that. (it's a shop stereo man!)But it is pretty fun to enjoy a marked audio improvement with this cute, no-brainer install, under $30.00 little DAC. Sure it works great for stereo TV if the set is outputting PCM too.
Review: Exactly as hoped it would work (which means better than expected). - It performed exactly as I hoped... which was better than I expected for my situation. So, so I setup an outdoor movie theatre for my friends and family and here was my situation: - bluray player connected to a projector via HDMI cable - speakers connected to an amp with only stero inputs and stereo outputs I needed a device to take the digital coax output from the bluray player and preferably convert it into stereo LEFT/RIGHT analog connections or at a minimum just convert it to mono to send to both speakers. I also didn't want to pay for a new amplifier or receiver to do this outside. So, I tried this device. It works great so far. It translated the PCM signal from the bluray to stereo analog signals (RCA) With the location of the player and the speakers to the listening audience, I got lucky and connected the left/right properly as I noticed when vehicles zoomed across the screen. Something I should have double checked before the movie, but it was done correctly, and showed that this little DAC worked exactly as I hoped. ** NOTE: If you're not getting sound, just check 2 things: 1. Change your sound output on the bluray player to PCM 2. Make sure the input selector (located on the bottom of the FiiO D3 is set to coaxial (not optical). I can not attest to it being great with 5.1 or 7.2 surround sound because I used it to feed the digital output from my bluray player and feed into a DAC (digital to analog converter) to make stereo sound for an outdoor movie experience (the HDMI went to the projector so I needed to get the sound out separately). In this capacity, it worked flawlessly. The sound signal appeared to be clean and pure, and I got great sound out of the speakers, which means that the components and cables in all phases went well. I bought this and another cable (a 3' from Monoprice - also has a review) in case 1 had an issue, but both worked beautifully. I expect this cable to last a long time and it works great, but I'd have no problems buying this again should I need another digital audio coax cable.

## Features

- Digital To Analog Converter
- Digital Signal Coaxial Input Port
- Digital Signal Optical Input Port
- Coaxial/optical Switch For Easy Switching Between Digital Signals
- 3.5mm Sound Output Dock. Supports PCM only

## Technical Specifications

| Specification | Value |
|---------------|-------|
| ASIN | B009346RSS |
| Best Sellers Rank | #68,980 in Electronics ( See Top 100 in Electronics ) #148 in Digital-Analog Converters #157 in Signal Converters |
| Customer Reviews | 4.3 4.3 out of 5 stars (2,394) |
| Date First Available | August 29, 2012 |
| Is Discontinued By Manufacturer | No |
| Item Weight | 1.76 ounces |
| Item model number | D03K |
| Manufacturer | Fiio |
| Product Dimensions | 2.44 x 0.83 x 1.93 inches |

## Images

![D3 (D03K) Digital to Analog Audio Converter - 192kHz/24bit Optical and Coaxial DAC - Image 1](https://m.media-amazon.com/images/I/51rHTqIOURL.jpg)

## Customer Reviews

### ⭐⭐⭐⭐⭐ Good Cheapie/fun DAC upgrade for Sonos and other devices
*by D***H on August 10, 2013*

Well, here is a quickie review on the 3rd gen D03K that may help others trying to research for specific uses. For the $$ this nice little piece is a great, fun DAC. I am a big music library fan, with a nice networked music library ripped in bit-perfect wav files. I had added a Sonos Connect (ZP90) player to my not so bad of shop stereo comprised of some great, mid-fi, mostly outdated components laying around: PSB large format bookshelf speaks, HK analog Pre/Pro, Onkyo discrete stereo amp, decent interconnects, etc. This system has a pretty nice level of fidelity to where you can hear things and I was experiencing one of the only weaknesses of Sonos, their DAC is a little disappointing when playing on higher fidelity setups where you can hear such things. The analog outs on the ancient Sony DVD unit I was using to play CDs was slaying the Sonos in SQ. Enter the FiiO unit. Set Sonos to uncompressed (if your files are lossless), fixed volume out (for full bit depth), coax digital to FiiO/analog to pre. Yes!! The result is blacker background, increased precision, tightened yet solid bass, in this case it did cure the minor dissatisfaction of listening through the onboard Sonos DAC. Since I had both Sonos/FiiO connected to the amp, asked my audiophile in training kid to do a blind A/B (I level matched between switching, so there was a 4 sec delay) he chose the FiiO every time in random selections over a several minute period. So, not saying this will beat a Benchmark, or mod the opamps to TL^%$$^ or anything like that. (it's a shop stereo man!)But it is pretty fun to enjoy a marked audio improvement with this cute, no-brainer install, under $30.00 little DAC. Sure it works great for stereo TV if the set is outputting PCM too.

### ⭐⭐⭐⭐⭐ Exactly as hoped it would work (which means better than expected).
*by T***X on October 21, 2015*

It performed exactly as I hoped... which was better than I expected for my situation. So, so I setup an outdoor movie theatre for my friends and family and here was my situation: - bluray player connected to a projector via HDMI cable - speakers connected to an amp with only stero inputs and stereo outputs I needed a device to take the digital coax output from the bluray player and preferably convert it into stereo LEFT/RIGHT analog connections or at a minimum just convert it to mono to send to both speakers. I also didn't want to pay for a new amplifier or receiver to do this outside. So, I tried this device. It works great so far. It translated the PCM signal from the bluray to stereo analog signals (RCA) With the location of the player and the speakers to the listening audience, I got lucky and connected the left/right properly as I noticed when vehicles zoomed across the screen. Something I should have double checked before the movie, but it was done correctly, and showed that this little DAC worked exactly as I hoped. ** NOTE: If you're not getting sound, just check 2 things: 1. Change your sound output on the bluray player to PCM 2. Make sure the input selector (located on the bottom of the FiiO D3 is set to coaxial (not optical). I can not attest to it being great with 5.1 or 7.2 surround sound because I used it to feed the digital output from my bluray player and feed into a DAC (digital to analog converter) to make stereo sound for an outdoor movie experience (the HDMI went to the projector so I needed to get the sound out separately). In this capacity, it worked flawlessly. The sound signal appeared to be clean and pure, and I got great sound out of the speakers, which means that the components and cables in all phases went well. I bought this and another cable (a 3' from Monoprice - also has a review) in case 1 had an issue, but both worked beautifully. I expect this cable to last a long time and it works great, but I'd have no problems buying this again should I need another digital audio coax cable.

### ⭐⭐⭐⭐ Rather impressed, just not ecstatic... due to high expectation
*by R***A on June 24, 2017*

I have intentionally waited instead of rushing to write a review, wound up waiting for over 1 year. Bought this to connect a $39.99 Kodi box's (https://www.amazon.com/gp/product/B01DZOBQ6O/ref=oh_aui_detailpage_o04_s00?ie=UTF8&psc=1) Toslink output to my stereo, hoping to provide reasonable good sound to the cheap-o HTPC setup. (Turned a then 7-yr old netbook into OpenELEC box, but found out it couldn't render 1080p smoothly. $40 seemed a great deal for a Kodi box!) The connected components are from the mid-90s: Conrad Johnson pre-amp, Aragon amp, Martin Logan speakers, MIT interconnects & AudioQuest speaker cables. After living with this little DAC for a year, watching many movies, TV shows & critically listening to music of various genres -- Bossa Nova, classical (symphonic, chamber, piano, aria...), jazz, vocal, Broadway, pop rock, New Tango... I would say that this unit has performed well, just not quite stellar. It's no doubt an improvement over the Kodi box's analog output -- crisper, more dynamic & much improved soundstage. Compared to my CD player's (Micromega, also from mid-90's) sound, however, it provides more presence at the expense of sounding somewhat 'bright' & induces some degree of listening fatigue. Not to the point of ruining instrument timbre, of course, but making some brass instruments and vocals sound harsher than hearing them live. I do wonder, though, if some recordings' intentionally boosted 10K-12K range (some older sound engineers' trick to make tracks sound more 'alive' on average playback systems) may be partly to blame. This DAC may have simply revealed that overcompensating flaws in the sound mastering. With that said, however, occasionally, sibilance in female voice can become overbearing -- 'Summer Samba' from Patricia Barber's 'Night Club' for example, whereas the Micromega CD player presented the sibilance just fine without drawing one's attention away the wonderful piano playing. It may seem unfair to compare this DAC to something 50X its price, but here it is anyway. 8-) I actually did hope that the past 20-yr+ of technical advancements in DAC would have made this unit at least on par with the CD player. To be fair, most recordings do sound wonderful, including remastered older analog recordings. Ella Fitzgerald's 'Nearness of You' simply oozes honey. Pretty awesome. In summary, a very impressive product for the price. I'm quite grateful that the unit allows the Kodi box (with a 3TB USB HDD attached) to become a nice sounding music server, allowing me to program 2 hours of music using my phone from the kitchen while the system is in the adjacent family room. Also, this unit is my first foray into a separate DAC unit, proving to me that perhaps any source of digital music, be it a phone, PC, Android box (with the right digital output of course) can be part of a great sound system with the aid of a modest DAC such as this unit. Maybe one day, I will upgrade to an even better DAC (by FiiO as well?) Either way, I'm keeping this little guy around. If you are looking to use your PC or Android box as a source of music playback, this unit should be on your short list!

## Frequently Bought Together

- FiiO D3 (D03K) Digital to Analog Audio Converter - 192kHz/24bit Optical and Coaxial DAC
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*Product available on Desertcart Slovakia*
*Store origin: SK*
*Last updated: 2026-01-24*