FiiO - D03K

Digital To Analog Audio Converter
Sale price₹ 1,690 Regular priceMRP: ₹ 1,990
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One of the reasons headphones and earphones in India are more expensive than overseas is because of the Goods & Services Tax in India.

Don't let the GST input go to waste especially if you can avail an offset.

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7 Day Replacement Guarantee

In case you receive the FiiO - D03K with a manufacturing defect, please raise a return request within 7 days of delivery.

However, if you receive an incorrect / damaged / different product or one with missing accessories, please raise a return request within 24 hours of delivery. In case you receive a product with a missing, incorrect, or faulty accessory, you will be given a replacement accessory instead of the entire product.

Please make sure that the product is in the original packaging with all the accessories it came with. We'll also need an unboxing video and images of the parcel to investigate about the discrepancy. You may be asked to share images of the product and the packaging received for us to determine the damage or defect prior to approving the return request. The free replacement will be shipped only once the original order is returned.

A replacement will be issued only if:

- It is found to be defective 
- It is determined that the product was not damaged while in your possession
- The product is not different from what was shipped to you
- The product is returned in original condition (with brand’s/manufacturer's box, MRP tag intact, user manual, warranty card and all the accessories therein)


Warranty & Services

This FiiO - D03K comes with a warranty from FiiO that covers manufacturing defects. All products featured on Headphone Zone are backed by an original manufacturer's warranty.

Read more about FiiO's warranty in India.



Tenure available: 3, 6 and 9 Months Eligibility: Above 18 years of age, Credit Card NOT Required Transaction value: Available on all orders Payment Gateway: Please choose Snapmint Cardless EMI at checkout
Tenure Interest% Downpayment Installment Interest
3 No Cost EMI ₹ 423 ₹ 423 ₹ 0
6 Low Cost EMI ₹ 423 ₹ 221 ₹ 57
9 Low Cost EMI ₹ 423 ₹ 153 ₹ 110

Snapmint Cashback Offer

Offer valid from 22/03/2023 to 31/03/2023
Users will get 10% cashback upto a maximum of ₹500
The offer is valid only for transactions made through the Snapmint payment option.
The offer is valid only for the first transactions of customers through the Snapmint payment option.
The Cashback offer is valid from 22nd March at 12:00 am to 31st March 2023 at 11:59 pm
The Cashback will be processed on the same day in the Snapmint wallet on which the last EMI is paid.
Cashback is valid only when the customer pays their EMIs on time.
The offer would not be applicable in case of canceled or refunded transactions. In case of a partial refund, the cashback will be applicable only on the remaining value.
The Offer can be availed only once per user during the campaign period.


Tenure available: 3 or 6 Months
Eligibility: All above 21 years of age
Transaction value: Available on all orders below Rs. 60,000/-
Payment Gateway: Please choose Razorpay at checkout

Cashback offer
  1. Valid from 10th Feb to 9th April
  2. Users will get 10% cashback up to a maximum of ₹1000
  3. The offer is valid only once per user during the offer period.
  4. No coupon code required.
Tenure Interest% Installment Interest
3 No Cost EMI ₹ 563 ₹ 0
6 No Cost EMI ₹ 282 ₹ 0


Tenure available: 3 Months
Eligibility: All Simpl users
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Payment Gateway: Please choose Simpl Pay in 3 at checkout

Tenure Interest% Installment Interest
3 No Cost EMI ₹ 563 ₹ 0

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Payment Gateway: Please choose Cashfree at checkout

Tenure Interest% Installment Interest
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1 Year of

Ideal for Movies and TV

These headphones are a much-needed addition to your home entertainment system. If you’re someone who is looking to simplify your setup or if you want to enjoy movies and TV shows without disturbing those around you, you have found what you’re seeking. You can expect these headphones to offer advanced audio technologies like surround sound and the ability to control various aspects of sound to help you get the most out of your content. All this in a sleek wireless design, eliminating the need for audio cables.

Ideal for Gaming

Sometimes, DAC & Amps embed a built-in microphone so you can use it while gaming. If you are someone working from home, or a professional gamer, you'll benefit from a DAC & Amp with a microphone.

You can expect these DAC & Amps to offer brilliant microphone quality and clear audio so that teammates can hear you at the other end. Just plug them in, and game your way to victory!

Ideal for Audiophiles

These DAC & Amps are designed for discerning music lovers. If audio quality is important to you, a set of DAC & Amps like these would be ideal.

You can expect these DAC & Amps to present you with a refined listening experience. The audio quality exhibited by these DAC & Amps is a beautiful mix of musicality, technical brilliance and high precision.

These DAC & Amps deliver a spacious & open soundstage that makes you feel you are sitting at a live concert. Experience the magic and delve into pure sonic tranquility!

Ideal for
Indoor Use

Two Way Speaker

A two-way loudspeaker has two speakers in it, each meant to present a frequency selection, usually high and low. A two-way speaker has two types of drivers which are known as a woofer and tweeter. The advantages of a two-way speaker are that it requires a simple crossover, small and compact and requires low amplification power. The performance of the music is relatively focused and balanced with low distortion. The general bookshelf speakers are two-way speakers.


Connect With
Optical & Coaxial

Super Lightweight


A simple yet powerful DAC that converts coaxial or optical digital audio input to the analogue stereo output using RCA and a 3.5mm mini stereo jack. Perfect for modern devices including TVs, gaming consoles, analogue amps, active speakers and wireless headphones that come with digital audio output.



The ultra-low jitter digital receiver chip and the low noise DAC allows the FiiO D03K to support a range of sample rates including 32kHz, 44.1kHz, 48kHz, 96kHz and 192kHz, that too at up to 24-bit resolution. Choose from the selectable coaxial or optical inputs. Note: Kindly note that the FiiO D03K only supports PCM audio signals and not Dolby, DTS, or other surround sound signals. Therefore make sure that the digital audio output of your device is PCM/LPCM output or else the sound output will be noise or static.

1 Year Warranty

Don't sweat it, this FiiO - D03K comes with a 1 Year warranty from FiiO that covers manufacturing defects. All products featured on Headphone Zone are backed by an original manufacturer's warranty.

Read more about FiiO's warranty in India.

Most watched reviews for FiiO - D03K

Customer Reviews

Based on 31 reviews
Rahul Kumar (Mumbai)
Design and Comfort:
Sound Quality:
Value for Money:
Handy device to make a legacy music system functional again!

Keeping this review short and crisp. I own a 50 inch VU TV (2015) and a Sony HiFi music system (MHC VX-777, Malaysia) back from 2002~2003, costed around INR 30k back then. The only reason I've kept the music system is because of the exceptional sound it produces under any circumstance. The speakers are wooden and it has surround speakers as well. I absolutely love it and ofcourse a lot of childhood memories attached.
Coming to the connections, I took the optical out of my TV to the FiiO D03K, then from there connected the RCA to system. And voila, the sound is amazing! Now I can use it while watching TV (D2h) as well as web series via Fire TV stick. The output is good enough for day to day usage, though not the enthusiast quality if you have those expectations. The price I feel is justified given the build quality.
Products that I used for the entire build:
1. FiiO D03K - Purchased from Headphonezone
2. USB Adapter -
3. Toslink cable -
4. RCA Cable -

Please note, the box contains the micro USB chord but NO adapter. Use any 5V/1A charger to power this up. I purchased a dedicated adapter and have linked the same above, it's cheap and works like a charm.

Thanks to HeadphoneZone for great delivery and device experience. Cheers to all!

PS: I'm not promoting any of the above products, just trying to make everyone's lives easy by providing the entire setup details.

Gokula Gopinath (Bengaluru)
Design and Comfort:
Sound Quality:
Value for Money:
Does the job well. Caution: Restricted use case

Thanks to headphonezone for bringing this quality product with warranty support, to India. And quick shipping.

I haven't tested the Optical input or RCA output. My primary use case is to draw digital audio out of my 2016 model TV using SPDIF (Coaxial) and convert to analog by a decent chip. This D03K does the job. The interfaces are clean and the build is good enough to be kept discrete. The sound quality is very clean and without any artificial articulation.

I am planning to connect a Power amplifier and just a pair of bookshelf speakers to complete my TV setup. My old TV doesn't have Dolby audio or any other surround format. So this D03K is good enough

Please note, this DAC doesn't support Dolby Audio or any other codec. If your TV has Dolby support, this DAC is useless, and better get a proper DAC which has all codec support.

But, for simply bringing the best audio out of a old TV which has a SPDIF or a Optical output, this is the best DAC which does only the essential task.

Also, please note, TVs don't support volume control for lineout. This D03K also doesn't have volume control. If you're connecting it to a headphone amp or power amplifier or a soundbar, the volume control can be done only in those. The TV remote is useless for volume control with this connection setup.

Amal (Trivandrum)
Sound Quality:
Value for Money:
A very capable DAC

Very much pleased with the quality of output, this little DAC produces. I bought this to pair it with my TV (optical) and tower speakers(RCA), as my speaker's output was too low through its Bluetooth mode, when enjoying OTT platforms and other net based services. The only issue I noticed is that, there is no option for an HDMI input, which I heard, is superior than both coaxial and optical input options provided with the DAC. But still, the audio output this guy produces is crystal clear and top notch.

HI Amal,
Delighted you are liking your purchase, we hope you had a comfortable shopping experience & thanks for the lovely review. Cheers & Keep the music playing!

Jason Kalathil Raju (Bengaluru)
Design and Comfort:
Sound Quality:
Value for Money:
Not for Headphones

My TV doesn't have the option to choose 3.5 mm or inbuilt tv speakers as the audio output while the headphones are plugged in. So i purchased this to connect my headphones to the tv using co-axial. When compared to what fiio was giving to my headphones, the TV's 3.5mm was loud and clear. I connected my media speaker which has an amplifier, the output was as expected. Maybe using an audio amplifier after fiio would work out, but it's too much of a hustle.

Siva sankar (Chennai)
Design and Comfort:
Sound Quality:
Value for Money:
No drama

It does well what the manufacturer mentioned.

I used to hear music using mobile, DVD and lap out as audio output. This d03k sounds well above the mobile and lap headphone out. But, not as good as a DVD player in terms of imaging and dynamics, even though it's mp3 @ 320kbps or m4a @ 512kbps (yes... DVD players are still very good for the money we spend)

The good thing with d03k is it's flat so it doesn't sound bloated as my mobile or laptop and clarity is better than DVD (maybe because of the lossless source). I connected the DAC with my tv btw.

And it's the third purchase from the Headphone zone and will continue in future. The experience is good as always.

I don't know if it happens or not but, to my ear this DAC sounds little bit better after some hours of usage. And it doesn't come with power adapter and optical cable. That maybe cost another 100 or 300 if you want a better quality rca cable and optical cable.

Nandish Munjal (Mohali)
Design and Comfort:
Sound Quality:
Value for Money:
Pretty good for the price

I recently bought it to use it with my LG C2 and some old 3.5mm jack speakers i had. Works pretty well and enhances the loudness.

Tehmasp Elavia (Mumbai)
Design and Comfort:
Sound Quality:
Value for Money:

First day experience. Firestick into tv toslink to Fii0 into Philips Valve amp into original philips 12" 2 way speakers. Music source 24 & more bit 320K high resolution FLAC internet radio. Yet to listen on my JBL headphone amp, with Fii0 dual driver headphone., and integrated stereo amp. sound qualty flat over frequency spectrum. No sub reqd.,It uplifts the tonal quality, hence produces bright sound. Happy to be associated with your team.
This is my 4th Fii0 product

Hey there, thank you so much for the review!

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