Name: FiR Audio Krypton 5 IEM
Brand: FiR Audio
SKU: fir kr5 4.4mm iem
Price: 264990.00 INR
Availability: InStock
Rating: 3.67 (3 reviews)

FiR Audio Krypton 5 IEM - The Audio Store

Roll over image to zoom in Click on image to zoom

5-driver portable sound just reached a higher standard with the FiR Audio Krypton 5. This cutting-edge in-ear monitor features high-quality acoustic technology that handles each note, instrument and vocals with delicacy and care. With impactful bass and crystal-clear sound, enjoy audiophile-grade audio today.

For Outstanding Performances
Experience outstanding clarity with the FiR Audio Krypton 5. This IEM features high-end technical expertise that offers a textured presentation with incredible instrument separation. The machined aluminium shell with a sapphire glass faceplate encompasses 4 balanced armature drivers and a 10mm dynamic driver.

Deeper than the Ocean
Regular IEMs usually lack depth as they deliver only half the sound. In a natural open-ear environment, the sound is heard in two ways - air conduction and bone conduction. Air conduction is the sound you hear with your eardrums. Bone conduction is the conduction of sound through the bones in your head as it reaches the inner ear (cochlea). Hybrid conduction mixes both. Like the rest of the Frontier Series, the Krypton 5 comes in Universal-Fit and Custom-Fit models too.

Feel the Bass
The FiR Audio Krypton 5 features cutting-edge Kinetic Bass technology. An open and ported 10mm dynamic driver is optimised to face the IEM shell’s exterior allowing lower frequencies to be transmitted directly to the ear cartilage and surrounding area. These frequencies are converted to kinetic energy that reaches the inner ear via bone conduction. This enhances the bass with an immersive audio experience and off-the-charts bass extension.

Open Acoustics System for an Open Sound
Traditional IEMs use a sound tube with the drivers to carry the sound to the canal stem. However, this creates unwanted resonances and a closed-in, stuffy sound. The FiR Audio Krypton 5 is designed with an Open Acoustics System comprising Open Drivers, a Sound Reactor and Sound Reflector for an incredible audio experience.

Goodbye Tubes, Hello High-End Acoustics
By not using sound tubes, the Open Drivers allow sound to flow directly into the Sound Reactor and in turn the ear canal. This ensures a wider soundstage with clear, natural audio. The Sound Reactor chamber shapes the sound coming from the drivers using natural acoustics instead of the dampers and filters used in traditional IEMs. The Sound Reflector directs the high frequencies into the ear canal for extended, smooth and airy treble.

No Pressure, Just Music
An Air Transferring Open Module reduces the pressure that builds up in a sealed ear canal. This reduces fatigue for long listening sessions. The ATOM Venting Technology is instrumental in protecting your hearing while being easy to swap for various levels of bass and noise isolation.

Flexes a Rigid Build
The Krypton 5 uses cutting-edge proprietary Rigid technologies for better reliability and durability. The 2-pin connector has been tested for 1,000 seamless connections. It easily fits into the quadrant socket design on the 3D printed shell that’s 20% thicker than the industry average for better durability. A snap screen i.e. an acoustically transparent mesh screen prevents debris from entering the canal stem.

DRIVER SPECS
1x 10mm Kinetic Bass Dynamic Driver
1x OpenDriver Balanced Armature Driver for bass
2x OpenDriver Balanced Armature Driver for mids
1x OpenDriver Balanced Armature Driver for highs (with Sound Reflector)

TECH SPECS
Freq. Range: 20-20kHz
Impedance: 22ohms
4.4mm balanced cable

Warranty Period: 1 Year from the date of Invoice
Covered: Manufacturing Defects Only
Warranty Form: https://www.theaudiostore.in/pages/warranty-claim-form

FiR Audio, a leading audio brand from the USA, specializes in crafting state-of-the-art In-Ear Monitors. Their cutting-edge technologies, such as Kinetic Bass, Open Acoustics, ATOM Venting, and Rigid Technologies, make their products truly exceptional. With FiR Audio, you get nothing but the best!

4.4mm

Phenomenal Sub bass with great imaging

Thankyou

Thank you for taking the time to leave such a detailed and positive review of the FiR Audio Krypton 5 IEM. We are thrilled to hear that you are enjoying the phenomenal sub bass and versatile sound of these IEMS. We are also happy to hear that the fitting is comfortable for long listening sessions. We appreciate your feedback and are always here to provide great support for our customers. Enjoy your music!

4.4mm

Excellent

Excellent layering delivered with kinetic bass on a wide sound stage. 👌.

Thank you for your review! We're glad to hear you're enjoying the FiR Audio Krypton 5 IEMs. We're excited to see what you think of our bass and sound stage when you use them for a longer period of time.

Long term review for KR5... a new benchmark

I wanted to write this review after spending some valuable time with the KR5. I've spent the last eight months researching this product, and here's what I think about it:

I couldn't believe my ears when I heard this product for the first time (after 100 hours of burn-in). The reaction is utterly silent and speechless. The impact, clarity, and—most importantly—the sensation of hearing the bass in your mind as well as in your ears cannot be adequately described using my vernacular. This is a sensation that can only be felt, not explained. I've heard a number of IEMs, but after hearing this, I don't believe I'll be able to appreciate the bass on any of them.

My collection includes practically all models from 64 Audio, Sennheiser, Campfire Audio, Moondrop, Final Audio, and the majority of the top-rated Chi-Fi IEMs. I doubt I'll ever appreciate the bass on any of them anymore.

At first, it may feel like there is too much bass, but the more time you spend on this product, the more you realise that this jewel shines in all aspect of hi-fidelity music.

Oh my goodness, I was shocked to experience a soundscape that rivalled many good quality open-back headphones. There are ver few IEMs that can trade blows with KR5. The soundstage is displayed in 3D rather than with a broad left-right separation. The same is true for layering and retrieving details.

Finally, I'd want to thank Pritam for recommending this product to me. My advice to my peers is that if he advises anything, buy it without hesitation; you won't be sorry, because he doesn't generally recommend a lot of items. As is customary, the package and shipping are both on time and flawless.

Thanks for the review! We're glad that you like FiR Audio Kr5.

5-driver portable sound just reached a higher standard with the FiR Audio Krypton 5. This cutting-edge in-ear monitor features high-quality acoustic technology that handles each note, instrument and vocals with delicacy and care. With impactful bass and crystal-clear sound, enjoy audiophile-grade audio today.

For Outstanding Performances
Experience outstanding clarity with the FiR Audio Krypton 5. This IEM features high-end technical expertise that offers a textured presentation with incredible instrument separation. The machined aluminium shell with a sapphire glass faceplate encompasses 4 balanced armature drivers and a 10mm dynamic driver.

Deeper than the Ocean
Regular IEMs usually lack depth as they deliver only half the sound. In a natural open-ear environment, the sound is heard in two ways - air conduction and bone conduction. Air conduction is the sound you hear with your eardrums. Bone conduction is the conduction of sound through the bones in your head as it reaches the inner ear (cochlea). Hybrid conduction mixes both. Like the rest of the Frontier Series, the Krypton 5 comes in Universal-Fit and Custom-Fit models too.

Feel the Bass
The FiR Audio Krypton 5 features cutting-edge Kinetic Bass technology. An open and ported 10mm dynamic driver is optimised to face the IEM shell’s exterior allowing lower frequencies to be transmitted directly to the ear cartilage and surrounding area. These frequencies are converted to kinetic energy that reaches the inner ear via bone conduction. This enhances the bass with an immersive audio experience and off-the-charts bass extension.

Open Acoustics System for an Open Sound
Traditional IEMs use a sound tube with the drivers to carry the sound to the canal stem. However, this creates unwanted resonances and a closed-in, stuffy sound. The FiR Audio Krypton 5 is designed with an Open Acoustics System comprising Open Drivers, a Sound Reactor and Sound Reflector for an incredible audio experience.

Goodbye Tubes, Hello High-End Acoustics
By not using sound tubes, the Open Drivers allow sound to flow directly into the Sound Reactor and in turn the ear canal. This ensures a wider soundstage with clear, natural audio. The Sound Reactor chamber shapes the sound coming from the drivers using natural acoustics instead of the dampers and filters used in traditional IEMs. The Sound Reflector directs the high frequencies into the ear canal for extended, smooth and airy treble.

No Pressure, Just Music
An Air Transferring Open Module reduces the pressure that builds up in a sealed ear canal. This reduces fatigue for long listening sessions. The ATOM Venting Technology is instrumental in protecting your hearing while being easy to swap for various levels of bass and noise isolation.

Flexes a Rigid Build
The Krypton 5 uses cutting-edge proprietary Rigid technologies for better reliability and durability. The 2-pin connector has been tested for 1,000 seamless connections. It easily fits into the quadrant socket design on the 3D printed shell that’s 20% thicker than the industry average for better durability. A snap screen i.e. an acoustically transparent mesh screen prevents debris from entering the canal stem.

DRIVER SPECS
1x 10mm Kinetic Bass Dynamic Driver
1x OpenDriver Balanced Armature Driver for bass
2x OpenDriver Balanced Armature Driver for mids
1x OpenDriver Balanced Armature Driver for highs (with Sound Reflector)

TECH SPECS
Freq. Range: 20-20kHz
Impedance: 22ohms
4.4mm balanced cable

Warranty Period: 1 Year from the date of Invoice
Covered: Manufacturing Defects Only
Warranty Form: https://www.theaudiostore.in/pages/warranty-claim-form

FiR Audio, a leading audio brand from the USA, specializes in crafting state-of-the-art In-Ear Monitors. Their cutting-edge technologies, such as Kinetic Bass, Open Acoustics, ATOM Venting, and Rigid Technologies, make their products truly exceptional. With FiR Audio, you get nothing but the best!

4.4mm

Phenomenal Sub bass with great imaging

Thankyou

Thank you for taking the time to leave such a detailed and positive review of the FiR Audio Krypton 5 IEM. We are thrilled to hear that you are enjoying the phenomenal sub bass and versatile sound of these IEMS. We are also happy to hear that the fitting is comfortable for long listening sessions. We appreciate your feedback and are always here to provide great support for our customers. Enjoy your music!

4.4mm

Excellent

Excellent layering delivered with kinetic bass on a wide sound stage. 👌.

Thank you for your review! We're glad to hear you're enjoying the FiR Audio Krypton 5 IEMs. We're excited to see what you think of our bass and sound stage when you use them for a longer period of time.

Long term review for KR5... a new benchmark

I wanted to write this review after spending some valuable time with the KR5. I've spent the last eight months researching this product, and here's what I think about it:

I couldn't believe my ears when I heard this product for the first time (after 100 hours of burn-in). The reaction is utterly silent and speechless. The impact, clarity, and—most importantly—the sensation of hearing the bass in your mind as well as in your ears cannot be adequately described using my vernacular. This is a sensation that can only be felt, not explained. I've heard a number of IEMs, but after hearing this, I don't believe I'll be able to appreciate the bass on any of them.

My collection includes practically all models from 64 Audio, Sennheiser, Campfire Audio, Moondrop, Final Audio, and the majority of the top-rated Chi-Fi IEMs. I doubt I'll ever appreciate the bass on any of them anymore.

At first, it may feel like there is too much bass, but the more time you spend on this product, the more you realise that this jewel shines in all aspect of hi-fidelity music.

Oh my goodness, I was shocked to experience a soundscape that rivalled many good quality open-back headphones. There are ver few IEMs that can trade blows with KR5. The soundstage is displayed in 3D rather than with a broad left-right separation. The same is true for layering and retrieving details.

Finally, I'd want to thank Pritam for recommending this product to me. My advice to my peers is that if he advises anything, buy it without hesitation; you won't be sorry, because he doesn't generally recommend a lot of items. As is customary, the package and shipping are both on time and flawless.

Thanks for the review! We're glad that you like FiR Audio Kr5.

TRUSTED BY OVER 35K+ MUSIC ENTHUSIAST

Read All Reviews

Let customers speak for us

from 4996 reviews

COLORFLY CDA M1P AK4493SEQ Balanced Portable USB DAC & AMP

Shivaprashanth Hiremath

This is really warm sounding as advertised. Especially vocals are more engaging. The fact that its driven by phone power doesn't affect the sound quality in anyway like in other dacs I have experienced brighter, thin sound or few peaks in upper midrange. If earphones are having good sensitivity then this dac provides good enough power. Although bit bulky build is very good. I'm sure it can withstand frequent drops also. Have not tried the filters and listening to default filter only. One thing I noticed is although on paper power output is good for 32ohm its only good at driving earphones and not headphones. Distortion kicks in when volume is increased even at high gain setting. I'm only guessing current supplying capability for dynamic driver headphones is not sufficient. Tested with 300ohm HD600.

COLORFLY CDA M1P AK4493SEQ Balanced Portable USB DAC & AMP

04/14/2025

Venkat Kowsik K

The sound quality is so much better than any other wireless earphones

KZ Castor Pro IEM With Mic

04/14/2025

KZ Type-C DAC Cable with Built-in Mic for IEMs

Sachin Karadkar

The quality of wire is superb.
The mic quality is also good.
Length and feel of wire is good. Sound quality with my Tangzu warner is excellent

KZ Type-C DAC Cable with Built-in Mic for IEMs

04/14/2025

Kartik More

Absolutely terrific

Have bought this on 17 Aug 2024 and after using it for almost half a year i can surely say this is the best one in this price range...

HiBy R4 Hi-Res Portable Music Player

04/14/2025

Sachin Parmar

I like how crisp and clear the audio is, also how good the IEMs respond to EQing, which unlocks a lot whole lot of possibility

KEFINE Klean IEM

04/13/2025

Krishnamoorthy Muthulingam

Special sounding iem

Recently bought this after seeing some positive reviews

Fit:
Unlike many reviews which talks about it's fit issue, it's a wonderful fit for me with the stock large size narrow bore tips. I usually go for medium or small size silicone tips but for this one large one fitted well. i guess large size long stem eartips fits well with this iem.

Sound:
Vocals and string instruments sounds forward but never thin or sharp or fatiguing and has a sweet timbre. I guess it's due to its thick note weight and the quality of dynamic driver.
Bass in general is good. But i would prefer little bit more sub bass quantity. Also prefer the bass to be a bit tighter. Not too tight as i am not a fan of too tight bass. Basically here bass decay is slow and i would prefer it to be moderate.
Treble has just enough energy and details but relaxed.

Overall it sounds very nice with a pleasant timbre.

Note that i replaced the stock cable with fiio ls-b 4.4 mm cable.

BLON BL-03 IEM With Mic

04/12/2025

AUDIOCULAR SuperMix 6 Hybrid Premium Eartips for IEMs

Anonymous

Spot On

Great set to start your tip rolling journey!
Got the delivery under 24 hrs.

AUDIOCULAR SuperMix 6 Hybrid Premium Eartips for IEMs

04/10/2025

AUDIOCULAR D07 CX31993 USB Portable DAC & Amp

Deepak Sundar Anandakumar

One of the best DAC and amp at Rs 850

This is wonderful product and quality is great. Very good working with mic.
And support samsung s22 ultra.

AUDIOCULAR D07 CX31993 USB Portable DAC & Amp

04/10/2025

S M Janarthanan

The Moondrop Blessing 3 is a hybrid IEM with excellent performance and a largely neutral sound signature with a slight bass boost. It offers impressive detail retrieval, resolution, and instrument separation for its price.
Pros:
* Excellent detail and clarity: It reveals subtle nuances in music.
* Balanced sound: Largely neutral with a well-controlled bass that doesn't bleed into other frequencies.
* Good technicalities: Strong imaging and separation of instruments.
* Comfortable for wearing for long periods
* Solid build quality
Cons:
* Fit can still be an issue for those with smaller ears.
* The cable could have been better.
Overall an excellent IEM for me.... Well done Moon drop!!!

MOONDROP Blessing 3 IEM

04/10/2025

Joel Chandanshiv

The KZ ZSN Pro 2 offers exceptional sound quality at an affordable price. With a hybrid driver setup (1 dynamic + 1 balanced armature), it delivers a punchy V-shaped sound signature with deep bass, clear mids, and sparkling highs. The soundstage is surprisingly wide with good instrument separation and imaging. Build quality is solid, featuring metal faceplates and a comfortable, ergonomic design. While the cable and accessories are basic, the overall performance makes the ZSN Pro 2 a fantastic value for budget audiophiles.

KZ ZSN Pro 2 IEM With Mic

04/10/2025

Kiwi Ears Allegro Mini Portable DAC & AMP

Dharmendra Parmar

Yes it is very comfortable 👍

Kiwi Ears Allegro Mini Portable DAC & AMP

04/10/2025

saravanan babu

Nice iem

Best under 2k for balanced sound.

Truthear Gate IEM With Mic

04/08/2025

EarAudio In-Ear Monitors (IEM), Earphones Carry Case

Ulhas Jaisingkar

Wow—Sturdy, Spacious, and Premium!

Rarely do you find cases that offer this kind of value. I love it for two main reasons: there's no need to cram your IEMs like in typical compact cases, and it has enough room to fit a dongle DAC comfortably. You can even carry two IEMs if needed. The build is solid, and it feels premium all around. A great pick!

EarAudio In-Ear Monitors (IEM), Earphones Carry Case

04/08/2025

Ulhas Jaisingkar

Premium Feel, Budget Price – What a Deal!

Suggested by Pritam—bought them and loved them. Insane value for the price! A must-have for beginners exploring the tip rolling game. While they mimic some branded ones, the material and build do differ—but the value is unbeatable. Highly recommended!

AUDIOCULAR SuperMix 6 Hybrid Premium Eartips for IEMs

04/08/2025