FiiO - BTR3K (Unboxed)

Balanced Bluetooth DAC & Amp
Sale price₹ 5,999 Regular priceMRP: ₹ 7,490
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7 Day Replacement Guarantee

In case you receive the FiiO - BTR3K (Unboxed) 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 - BTR3K (Unboxed) 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
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9 Low Cost EMI ₹ 1,500 ₹ 542 ₹ 390

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Offer valid from 22/03/2023 to 31/03/2023
Users will get 10% cashback upto a maximum of ₹500
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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.


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1 Year of

Ideal for Taking Calls

Sometimes, DAC & Amps embed a built-in microphone so you can make calls while on the go. If you are someone who is working from home and needs to do a conference call or a video call, you'll benefit from a DAC & Amp with a microphone.

You can expect these DAC & Amps to offer brilliant microphone quality and clear audio without connecting additional peripherals. Just plug them in, and express yourself!

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!

Best Suited for Portable Use

For those who value them, being able to carry their favourite DAC & Amp equipment when they are on the move is invaluable.

These DAC & Amps offer the ultimate portability experience without sacrificing sound quality. If you’re someone who appreciates cutting-edge engineering, quality sound and portability, then look no further.

Designed to be trusty companions, these DAC & Amps are cleverly engineered with the latest technology to offer the ultimate combination of portability & Hi-Fidelity!

Bluetooth with LDAC,
aptX LL, aptX HD & AAC

Battery Life

DAC & Amps with built-in batteries offer easy operation without the annoyance of wires.

Battery life is a measurement of battery performance. It is the amount of time your DAC & Amps will still have enough juice to power your headphones or IEMs. It can be summed up; as how long a battery will last before your DAC & Amps need to be recharged.

Nothing interferes with your music, thanks to the high-performance and long-lasting battery. No interruptions, just pure sonic bliss!

Balanced Output

Pair with Laptop via USB

A majority of people use a laptop as the primary source device to listen to music or watch movies. Since the laptop is an essential part of the audio chain there are headphones and devices designed to work a laptop or computer system flawlessly. With the availability of USB connectivity, it becomes easier to pair various devices like an Amp, DAC or even headphones without worrying about drivers or any additional piece of software.

Dual AK4377A
DAC Chip

Upto 78mW @ 32Ω
Power Output

Battery Capacity of
330 mAh

Headphone Zone Certified Unboxed Units

Unboxed units are as good as new products with the product's packaging being unavailable. These products give you the same satisfaction of new products - but at down-to-earth prices. Usually, the product's packaging may have gotten damaged in transit. Customers use a product once or twice and then return it with opened up packaging.

Customer Returns

Returned headphones are fully functional products that have left the warehouse and therefore can no longer be sold as new as their packaging has been opened. The product may have been used once or twice by the customer who returned it.

Transit Damages

Sometimes we receive headphones in damaged packaging due to shipping accidents. These are brand new headphones with cosmetic flaws on the packaging.

Save Upto 15%

Since you won't get the original packaging, we give you a good discount compared to a new headphone.

Professionally Inspected

A thorough inspection means you receive a 100% working headphone with no sound output issues.

Original Warranty

All unboxed headphones carry the same warranty period as a brand new headphone would.

Unbiased Customer Service

We have the same Headphone Zone customer support experience for Unboxed Products or new products.

Unchanged Replacement Policy

Received a defective Unboxed unit? Return it under our Replacement Policy.

All Original Accessories

The unboxed headphones itself comes with all original accessories.

1 Year Warranty

Don't sweat it, this FiiO - BTR3K (Unboxed) 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.

IGN Awards

Portable Bluetooth DAC/Amp

Nov, 2020


"Volume adjustment is independent from the source device,whether the BTR3K is connected via Bluetooth/USB.In both cases it keeps its own volume that's distinct from the source."

Read More

"The sound of BTR3K is very clear warm & smooth,with a thicker presentation,less treble energy than BTR5, it very clearly favors neutral and brite IEM's,rather than warm & neutral ones."

Read More

"The main shell is made of aluminium alloy while the front and back are 2.D reinforced glass,the device will inspire confidence to use it without fear of falling apart. "

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"Bass is natural with normal depth & resolution, but both parameters are slightly cut off by Bluetooth codecs.There are no attempts to force bass and it is good for textures & technicality."

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"The trick with FiiO BTR3K is that it is affordable, mini-sized, and most probable to be paired with a Chifi IEM, all of which are known for their fairly strong treble and bright signatures."

Read More

Customer Reviews

Based on 40 reviews
Ayush Kumar (Lucknow)
Design and Comfort:
Sound Quality:
Value for Money:
BTR3K - Best depending on usage

I own both the BTR3K and BTR5 so will compare both against each other.

My use case: Since new phones don't have 3.5mm output, I wanted something to play music, watch videos and take handsfree calls on my phone. I was only going to use either an earphone (Sony MDR xb55ap) or a regular headphone (ATH M40X).

Build quality - Amazing. No sharp edges, looks modern, small size, light weight. Can be easily clipped to shirt collar with the provided plastic clip. It is so light and small that in a few minutes, you forget it's even there. BTR5 is twice bigger and heavier. It is also small but not so small & light that you forget it. It is another device that you have to carry in your pocket.

Sound quality - Waaaay better than anything found in a phone/laptop/tab. If you haven't heard any other DAC/Amp so far, this will be audio nirvana for you. Good music separation, tight bass, wide soundstage, clear vocals, no background noise/pop.

Microphone - The microphone works as it should. If your earphone has mic, it picks up that. If it doesn't, it uses it's own mic. But since it will be on your shirt collar, it also picks up surrounding noise. So either use earphones with mic or bring it closer to your mouth which looks weird especially to others or take calls in a quiet environment.

Battery - Lasts a whole day easily from morning till late night.

Bluetooth range & latency - Depends on codec being used. LDAC has shortest range (one room only) but best audio quality. AAC has longest range (3bhk house) but worst audio quality. aptX is somewhere in between so pick as per your need. I mostly use LDAC and the latency/lag/delay is barely noticeable. It is there but only if you really notice. Pause and play again if there is delay in videos.

Value for money - Would have been perfect if Fiio had priced it 1K less but even at the current price, it is the best in the market for what it does. So okay there just not great.

Comparing with BTR5 - This is where it gets interesting. BTR5 has an objectively better sound quality. It is slightly sparkly in treble, has tighter bass and perfect timings on vocals and beats. It makes songs way more enjoyable and lively. BTR3K is laid pack in perspective, it is slightly warm, less tight bass and is loose on vocals and beats. And this is where it boils down to what you need. For long listening sessions (>1 hour), I prefer BTR3K. BTR5 sounds lively and immersive but it is so prominent and "in your face" that you can't focus on anything else. So, for my use case, where I wanted something to play music/videos on phone for long hours and still work or read/cook/run etc., the laid back sound of BTR3K is much better. It doesn't get fatiguing even after hours of music and the slightly warm sound is relaxing for videos/calls. Get BTR5 if you want to close your eyes, sit in a sofa, drown in music and do nothing else. Or if you have power hungry headphones. I now mainly use it as a DAC for my speakers in which it excels. If you plan to casually listen and work/study/run etc. BTR3K is better as its less revealing and fatiguing. BTR5 is better than BTR3K in analytical sound quality but it depends on your listening use case. Fiio has very cleverly designed and placed these products. BTR5 is well worth the extra price IF you have use for it and don't mind the DOUBLE size/weight/presence.

Headphone zone experience - Flawless. Delivered on time and the product is new. I even received some audiophile songs recommendations which is a good touch and sets them apart. Delivery updates were on time and accurate. Have been ordering from them and will again in future.

Hey Ayush,
Thank you for such a detailed review, definitely gonna help our customers to make an informed decision. Great to know you had a comfortable shopping experience. Thank you for the review & ratings!

Akhil (Kottayam)

This small amp/dac combo has absolutely changed how i work and listen to music. Being a bluetooth adapter is such a big plus, it does not limit me by the length of earphone or headphone, and the fact that you can use the inbuilt mic of the eaphone/headphone is a major plus, that means you dont have to clip the adapter near your neck, you can just toss it in your pocket and chill. The difference is there when you use it as a usb dac, it sounds way better than the normal audio output. Ability to connect 2 devices and switch between them effortlessly is also useful. A tip - upgrade the firmware version to 1.3 , then you can reprogram the volume up and down button, to a limited extent ofc. Very happy with this product 10/10 will recommend to anyone.!

Hey Akhil,
We thank you for this lovely review & we are glad you are enjoying it! Keep the music playing & Welcome to the Club.

Priyvrat Tiwari (Lucknow)
Design and Comfort:
Sound Quality:
Value for Money:
Crazy convenience!

It's just amazing to hear what this little dac can do! I use it to wirelessly connect to my JBL stage a170 tower speakers via an amp. The amount of soundstage and details which this added was just mmmmm...apart from that I love the touch of uniqueness from headphonezone, it's my first purchase from here and it was a great one.

Avishek Majumdar (Bengaluru)
Really good bluetooth receiver.

I was really skeptical about the power output figures, weather it would be able to drive my EX1 and Aria's however I was pleasantly surprised that not only can it drive them but there room to spare and that is out of the single ended output. You obviously cannot compare the overall sound quality to a desktop amp/dac but it does the job. Bluetooth connection is pretty stable upto 10 m beyond which it starts to distort. Hats off to Headphone Zone and Bluedart for the really fast delivery. I have bought quite a few products from them over the years and they do not disappoint with their delivery and customer service.

Thank you for sharing your review. We're so happy to hear that you've had a good experience with us.

Debaditya Chatterjee (Bengaluru)
Design and Comfort:
Sound Quality:
Value for Money:
Compact and delightful

I purchased this for outdoor listenning with my Legacy 3 IEM. I used to have a Lypertek Tevi TWS but after their battery died suddenly I decided to go with a bluetooth DAC instead of a new TWS that sacrifices on audio quality. It's perfect for my use case and its bigger brother (btr5) has rave reviews all over the interwebs.

I have loved the sound out of the 3.5mm output and I did notice that I need to turn the volume up quite a bit. But this also supports balanced output and that is supposed to have a greater audible range.

Few quirks that I didn't like:
1. The battery level follows a step function of 20. I have never seen any battery percentage that is not a multiple of 20 yet.
2. Unlike the btr5 there is no screen and instead there is just an rgb led. Not a big deal for me but seems like there's enough space to show the volume level at least.

We appreciate your honest & elaborative review as well as awesome ratings, Debaditya Chatterjee!

Rajesh T (Hyderabad)
Design and Comfort:
Sound Quality:
Value for Money:
Good Buy

Audio level should be increased. Other than everything is good.

V (Mumbai)
Design and Comfort:
Sound Quality:
Value for Money:
Best value for money

One step forward in audiophile journey.
Can't tell in words
We Have to feel
(Bhuke ko khana miljaye aisa hi kuch samjho)

Hey, thanks a lot for this lovely review and we are glad you are enjoying it! Keep the music playing.