FiiO FD3 Earphones in-Ear Earbuds High Resolution 1DD Bass Heavy MMCX Connector (Black)
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Availability:
In Stock.
Arrives
Thursday, Jul 9
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Color: Black
Features
- [Flagship-level DLC diamond diaphragm, for an amazing, powerful sound]: The FD3 headphones benefits from the numerous advantages of FiiO's new dynamic driver. The diaphragm is made of Diamond Like Carbon (DLC) which is both impressively rigid and helps to reduce unneeded distortion yet also surprisingly light, allowing the driver to have excellent transient response. The result is a driver with excellent sound quality and minimal distortion with the added bonus of being ultra-sensitive.
- [Flagship-grade acoustic prism, take your breath away]: The acoustic prism so effectively used in the flagship FD5 for great sound quality is also featured in the FD3. Like with the FD5, the acoustic prism system brings numerous benefits such as eliminating high frequency standing waves, enhancing overall sound wave diffusion, and even effectively solving the problem of time delay caused by sound wave propagation path in the cavity. This all leads to marvelous sound quality.
- [Better sound with semi-open design,makes you less tiring and the sound less forced]: The semi-open design of the FD3 based on FiiO's patented technology for balanced air pressure within brings several advantages. Not only does such a design lead to more natural sound, but it also effectively protects your hearing by balancing air pressure within the FD3 leading to less pressure on your eardrums.
- [2.5D film coating glass faceplate] The unique celluloid panel is covered with 2.5D film coating glass for a pure yet fresh transparent look. And the aluminum-magnesium alloy of the body makes the FD3 exceptionally light, making it easier and more pleasurable to carry around. And the aluminum-magnesium alloy main body is made in an industrial process combining five-axis CNC processing and hand polishing.
- [Well-equipped just for you] The well-received interchangeable sound tubes also make an appearance on the FD3, The cable adopts an expanded MMCX connector for easier cable changes; the curved audio plug design makes it easier to plug into; and 4 strands of high-purity monocrystalline copper wires for a total of 120 wires make your music and vocals simply vivid.
Features
- [Flagship-level DLC diamond diaphragm, for an amazing, powerful sound]: The FD3 headphones benefits from the numerous advantages of FiiO's new dynamic driver. The diaphragm is made of Diamond Like Carbon (DLC) which is both impressively rigid and helps to reduce unneeded distortion yet also surprisingly light, allowing the driver to have excellent transient response. The result is a driver with excellent sound quality and minimal distortion with the added bonus of being ultra-sensitive.
- [Flagship-grade acoustic prism, take your breath away]: The acoustic prism so effectively used in the flagship FD5 for great sound quality is also featured in the FD3. Like with the FD5, the acoustic prism system brings numerous benefits such as eliminating high frequency standing waves, enhancing overall sound wave diffusion, and even effectively solving the problem of time delay caused by sound wave propagation path in the cavity. This all leads to marvelous sound quality.
- [Better sound with semi-open design,makes you less tiring and the sound less forced]: The semi-open design of the FD3 based on FiiO's patented technology for balanced air pressure within brings several advantages. Not only does such a design lead to more natural sound, but it also effectively protects your hearing by balancing air pressure within the FD3 leading to less pressure on your eardrums.
- [2.5D film coating glass faceplate] The unique celluloid panel is covered with 2.5D film coating glass for a pure yet fresh transparent look. And the aluminum-magnesium alloy of the body makes the FD3 exceptionally light, making it easier and more pleasurable to carry around. And the aluminum-magnesium alloy main body is made in an industrial process combining five-axis CNC processing and hand polishing.
- [Well-equipped just for you] The well-received interchangeable sound tubes also make an appearance on the FD3, The cable adopts an expanded MMCX connector for easier cable changes; the curved audio plug design makes it easier to plug into; and 4 strands of high-purity monocrystalline copper wires for a total of 120 wires make your music and vocals simply vivid.
Brand: FiiO
Model Name: FD3
Color: Black
Form Factor: In Ear
Connectivity Technology: Wired
Product Dimensions: 3.94 x 1.97 x 5.91 inches
Item Weight: 12.7 ounces
Item model number: 8
Batteries: 1 Lithium Polymer batteries required.
Date First Available: July 21, 2021
Manufacturer: FiiO
Units: 1 Count
Brand: FiiO
Color: Black
Ear Placement: In Ear
Form Factor: In Ear
Impedance: 32 Ohms
Brand Name: FiiO
Model Number: 8
Model Name: FD3
Built-In Media: Cable
Age Range Description: Adult
Customer Package Type: FFP
Number of Items: 1
Series Number: 8
Manufacturer: FIIO
Is Autographed: No
Headphones Ear Placement: In Ear
Headphone Folding Features: In Ear
Earpiece Shape: Rounded
Control Type: Media Control
Control Method: Touch
Impedance: 32 Ohms
Noise Control: None
Audio Driver Type: Dynamic Driver
Frequency Range: 20 Hz - 20,000 Hz
Enclosure Material: Aluminum
Specific Uses For Product: Entertainment
Antenna Location: Exercising, Running
Compatible Devices: Devices with a 3.5 mm audio jack or compatible wireless connectivity
Cable Features: Retractable
Carrying Case Material: plastic"} or {"value" "leather
Additional Features: Lightweight
Headphone Jack: 3.5 mm Jack
Connectivity Technology: Wired
Color: Black
Style Name: in-ear
Carrying Case Color: Black
Unit Count: 1.0 Count
Frequently asked questions
If you place your order now, the estimated arrival date for this product is:
Thursday, Jul 9
Yes, absolutely! You may return this product for a full refund within 30 days of receiving it.
To initiate a return, please visit our Returns Center.
View our full returns policy here.
To initiate a return, please visit our Returns Center.
View our full returns policy here.
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Top Amazon Reviews
Color: Black
This is the non pro version. This is a good, well rounded IEM. I give it 4.5 stars. It is light and with the right size tip there is no comfort issues. It tends to be a bit on the bright side. Sound tube and bass tips tame it down to a good level. It delivers clean and crisp sound in all genres. The vocals and treble are very good. The bass benefits from amping. I use it with a portable amp (Fiio A5), with the bass boost on, and it improves the bass definition and power. I still feel the FH3 has a better more defined and beautiful bass. I was hoping they can reproduce that in the FD3. Compared to the FH3, the FH3 was bigger and felt nicer sitting in the ear. However both are extremely comfortable. Also the FH3 felt a bit higher quality perhaps because of it’s design. The FD3 quality is very good, it’s just the feel of the FH3 was a little more upscale. The FH3 has a better more defined and cleaner bass, but the mid and upper frequencies were too thin with my equipment. It also has some weirdness in the treble of certain tracks especially acoustics. The FD3 has none of those issues. The FD3 has full bodied mids and highs, a little less detailed but still very good. With the 2 different sound tubes and the different tips you can dial the sound to the way you prefer, or to the genre you are listening to and it makes a difference. The basic cable is fine. I heard the pro cable may make the sound brighter. I don’t know how true that is. I wanted mine to be on the warmer side because the DAC I use tend to be on the brighter side. I had returned the FH3 about a month ago because I could not love the vocals and the treble. I will be keeping the FD3. Update 11/25/2021: I have upgraded the basic cable to a balanced cable. If you are not using a balanced output you are not getting the most out of the FD3. Despite using the 3.5mm with a DAC dongle and a portable amp the balanced cable was significantly better out of the DAC alone! Everything sounds cleaner and crisper. The bass is tighter, there is more separation, the stereo effect is noticeably better. So this lets me enjoy the music at a lower volume. For reference I am using a HIDIZS S9 (not pro) and Tripowin Altea 2.5mm cable which is a nice thick cable. I use the red sound tube with the bass tips and it balances out the sound pretty well. I think the sound tubes are a major selling point as you don’t to have to be stuck with one tonality.
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Reviewed in the United States on August 16, 2021 Reviewed in the United States on August 16, 2021 by P229
Color: Black
Amazing IEMs, not just for the money but in general. I own many “audiophile” headphones and these compare with the best of them. I wanted something with lots of clear and defined bass, while retaining detailed mids and crisp highs, and these deliver. I use the red sound tubes and vocal tips because they are the most comfortable and give the best, most reliable seal, which provides the best bass and sound in general. If you can EQ, then cutting out some 2.5khz and to a lesser extent 5.5khz frequency gives an even smoother high-mid/low-treble sound, as they have peaks in that range that can become a bit tiresome with certain songs. I also add a low shelf (bass boost) for some types of music and they can handle it like a champ. However, even without EQ they sound great although a little bright, but with the many different tips and sound tubes they’re customizable enough. Great value for the money I recommend to anyone who wants better sound than what even the best bluetooth earphones can provide, casual listeners and “audiophiles” alike.
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Reviewed in the United States on December 31, 2022 by ruth j
Color: Black
The sole qualm I have with these earbuds is a light static that can be heard when no other audio is playing, simulated tinnitus, essentially. That having been said, it's potentially a problem with my personal pair or the connection (I'm no audio professional nor expert.) Otherwise however, the fit is gloriously comfortable, the over-ear cable design was an interesting choice but it works well and the sound quality sounds better than most other audio devices I've tried. That having been said there is one clarification that needs to be said. Removable wires --DOES NOT-- mean optional wireless mode. It means that the earbuds may have interchangeable wires, as the only difference between the normal and pro versions are in fact - the wires. As far as wired earbuds go these are a 8/10 for me, would be 9/10 without the negligible static sounds when otherwise quiet.
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Reviewed in the United States on July 27, 2023 by James
Color: FD3 PRO black
There's a lot of issues with these earbuds, but first the pros: - Nice holder case for it and all the spare parts - Extra speaker parts to replace - Lot's of ear options - A few extras in the case - The sound is pretty nice for the most part, when it works. And now the cons: Out of the box left ear didn't work. Switched the ear piece to the spare and it worked fine. Then the right ear stopped working a few weeks later. Switched to the spare no issues... Or so I thought, but I would regularly find that they unscrewed themselves constantly so I would have to search around for that spare until I eventually lost it outdoors because it wouldn't stay screwed in. So I went and started using the original and have been having a ton of issues. For one, the audio just cuts out randomly or starts going static. I think there's something wrong with the wire as out of the box I had issues where if I pressed a particular part of the wire it would stop working - Now it's the opposite where I need to press it for it to work. Also can't get them to stay in my ears but that might be more of a me issue. The audio quality is inconsistent, its louder in one ear than the other... I could go on. I've had an absolute nightmare with these. They are NOT worth $150. Very unfortunate that I basically threw away $150.
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Reviewed in the United States on November 12, 2025 by Rain
Color: FD3 PRO black
Sounded great but ultimately ended up returning for a few reasons. First issue for me was the fit, I tried different eartips that cane included and also purchased other but regardless couldn't get the best fit. The other issue I noticed is that since the nozzles can be removed/switched, I'd notice they would (with the slightest adjustment/movement) start unscrewing. This might just be a me issue because of the fit but I'd always have to tighten them due to them unscrewing. And the main issues I had: is that at times when connecting them to a dongle (my phone doesn't have a 3.5) they wouldn't actually connect. Like it'd say it was connected and I would press play on a song but no audio would be coming though, neither through my phone speaker or the iem but the track would be playing. Its not the dongle; I have 4 total so and I had the issue with all of them, and I tried different earbuds and they worked well with those dongles. And lastly sometimes I'd notice that the right earbud would sound as loud as the left earbud. Not sure if this had something to do with the nozzle unscrewing with the slightest movement or it'll its something else. I still have it 3 stars as I believe some of these issue might just be due to the fit for me and may not apply to others, plus the sound when everything was working fine was great.
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Reviewed in the United States on August 13, 2024 by Christian M.
Color: FD3 PRO black
Well, I will fully admit that I am no audio file. However, I do like good sounding music and with my new FiiO M21. I do hear more vibrant great bass from my phone. Which does not sound bad. I must admit, although I do use it in Bluetooth mode. I’m very happy with the purchase l!
Reviewed in the United States on March 1, 2026 by T
Color: Black
Everything about this pair of IEMs has worked well for me. The cable doesn’t create any noticeable noise when brushed against fabrics, and doesn’t have too much memory which would make it a pain to store safely. Additionally, the metal casing of the IEM itself is hefty, but light enough that I don’t notice it for too long after putting them in. The tuning is definitely on the bass-heavy side of things (even with the black sound tubes and vocal tips), but the quality doesn’t suffer at all from that. These will be my new daily drivers for the foreseeable future as there’s no real drawbacks to this pair.
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Reviewed in the United States on March 14, 2026 by James Wilson
Color: FD3 PRO black
EDIT/Update: I am changing my review to 5 stars. The Spinfit CP100 silicone eartips in XL made these earphones a perfect fit for my ear and the improved seal made the sound of the earphones even better. (If you have normal-size ear canals, you'll likely be happy with one of the included sets of eartips.) I am now extremely happy with these earphones for listening to music and practicing my bass. This won't be a surprise to most audiophiles, but the silicone or foam tips for IEMs are as important as the IEMs themselves. These earphones have excellent frequency response (flat across the spectrum with good bass and highs) and great staging. My only problem is my very large ear canal - the largest silicone tips provided are barely large enough and I have to fiddle with the earphones to get a decent seal (the memory foam tips included don't work with my ears at all). The best seal I've gotten so far is with tips off of my Samsung Buds 2 Pro wireless earphones, but they're not designed for the nozzles on the FiiO set. I have ordered some Spinfit CP100 silicone eartips in XL which will be here tomorrow and should fix my issues. Again, I believe these are excellent earphones and are heads and shoulders above the Sennheiser IE 200s I tried and returned.
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Reviewed in the United States on November 21, 2023 by Rob L.