




FATfreq X Effect Audio - Quantum
In-Ears With Planar Magnetic DriverGET 18% GST INPUT
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Browse EMI Plans
Low Cost EMI Options through Credit Cards
ICICI Bank
3
Low Cost EMI
₹ 24,984
₹ 1,954
₹ 1,575
6
Low Cost EMI
₹ 12,740
₹ 3,442
₹ 2,785
9
15.99%
₹ 8,661
₹ 4,949
12
15.99%
₹ 6,623
₹ 6,476
18
15.99%
₹ 4,588
₹ 9,587
24
15.99%
₹ 3,574
₹ 12,775
HDFC Bank
3
Low Cost EMI
₹ 24,985
₹ 1,955
₹ 1,575
6
Low Cost EMI
₹ 12,741
₹ 3,444
₹ 2,785
9
16%
₹ 8,661
₹ 4,953
12
16%
₹ 6,623
₹ 6,480
18
16%
₹ 4,588
₹ 9,593
24
16%
₹ 3,574
₹ 12,783
SBI Bank
3
Low Cost EMI
₹ 25,005
₹ 2,017
₹ 1,622
6
Low Cost EMI
₹ 12,704
₹ 3,227
₹ 2,598
9
15%
₹ 8,626
₹ 4,638
12
15%
₹ 6,589
₹ 6,066
18
16%
₹ 4,588
₹ 9,593
24
16%
₹ 3,574
₹ 12,783
Axis Bank
3
Low Cost EMI
₹ 24,985
₹ 1,955
₹ 1,575
6
Low Cost EMI
₹ 12,741
₹ 3,444
₹ 2,785
9
16%
₹ 8,661
₹ 4,953
12
16%
₹ 6,554
₹ 5,653
18
16%
₹ 4,588
₹ 9,593
24
16%
₹ 3,574
₹ 12,783
Other EMI Options through Credit Cards
Citi Bank
3
14%
₹ 24,903
₹ 1,710
6
14%
₹ 12,668
₹ 3,010
9
16%
₹ 8,661
₹ 4,953
12
16%
₹ 6,623
₹ 6,480
18
16%
₹ 4,588
₹ 9,593
24
16%
₹ 3,574
₹ 12,783
Kotak Mahindra Bank
Tenure
Interest%
Installment
Interest
3
16%
₹ 24,985
₹ 1,955
6
16%
₹ 12,741
₹ 3,444
9
16%
₹ 8,661
₹ 4,953
12
16%
₹ 6,623
₹ 6,480
18
16%
₹ 4,588
₹ 9,593
24
16%
₹ 3,574
₹ 12,783
RBL Bank
3
13%
₹ 24,862
₹ 1,587
6
14%
₹ 12,668
₹ 3,010
9
15%
₹ 8,626
₹ 4,638
12
15%
₹ 6,589
₹ 6,066
18
15%
₹ 4,554
₹ 8,973
24
15%
₹ 3,539
₹ 11,948
Standard Chartered Bank
3
13%
₹ 24,862
₹ 1,587
6
13%
₹ 12,632
₹ 2,793
9
14%
₹ 8,591
₹ 4,324
12
14%
₹ 6,554
₹ 5,653
INDUSIND Bank
3
14%
₹ 24,903
₹ 1,710
6
14%
₹ 12,668
₹ 3,010
9
15%
₹ 8,626
₹ 4,638
12
15%
₹ 6,589
₹ 6,066
18
15%
₹ 4,554
₹ 8,973
24
15%
₹ 3,539
₹ 11,948
HSBC Bank
3
12.50%
₹ 24,842
₹ 1,526
6
12.50%
₹ 12,614
₹ 2,684
9
13.50%
₹ 8,574
₹ 4,167
12
13.50%
₹ 6,537
₹ 5,448
18
13.50%
₹ 4,503
₹ 8,049
YES Bank
3
13%
₹ 24,862
₹ 1,587
6
13%
₹ 12,632
₹ 2,793
9
14%
₹ 8,591
₹ 4,324
12
14%
₹ 6,554
₹ 5,653
18
15%
₹ 4,554
₹ 8,973
24
15%
₹ 3,539
₹ 11,948
Bank of Baroda
3
13%
₹ 24,862
₹ 1,587
6
14%
₹ 12,668
₹ 3,010
9
14%
₹ 8,591
₹ 4,324
12
15%
₹ 6,589
₹ 6,066
18
15%
₹ 4,554
₹ 8,973
24
16%
₹ 3,574
₹ 12,783
American Express
3
14%
₹ 24,903
₹ 1,710
6
14%
₹ 12,668
₹ 3,010
9
14%
₹ 8,591
₹ 4,324
12
14%
₹ 6,554
₹ 5,653
18
15%
₹ 4,554
₹ 8,973
24
15%
₹ 3,539
₹ 11,948
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Why FATfrequency is Special
Designed in Singapore
Young Maverick Brand
New on the scene, but bringing seasoned expertise 🌟!
I get excited about young maverick brands because they often bring fresh perspectives and cutting-edge innovation that challenge established players. These companies combine youthful energy with serious technical expertise, often demonstrating remarkable attention to detail and commitment to pushing boundaries. Think of them like startup tech companies - they might be newer, but they're hungry to prove themselves and often deliver incredible value.
Drawing on deep industry expertise and passion for audio excellence, these brands often demonstrate remarkable attention to detail and commitment to technological advancement. They frequently deliver cutting-edge technology and performance that rivals established competitors 🚀.
When you see "🥊 Young Maverick Brand" products, expect innovative excellence from companies that combine fresh energy with serious technical expertise to deliver impressive results.
Specialist
A masterpiece from experts who know audio inside and out 🔧!
I tend to describe specialist manufacturers as "audio artisans" who focus exclusively on perfecting specific categories of equipment. These products are meticulously crafted by dedicated experts who possess deep knowledge of sound reproduction, ensuring every technical aspect is refined to perfection. Think of them like master craftsmen who spend their entire careers perfecting one specific skill - their focused expertise shows in every detail.
These dedicated experts bring years of specialised knowledge to the design process, resulting in products that consistently achieve exceptional performance standards through focused engineering excellence 🎯.
When you see "🌟 Specialist" products, expect focused expertise from manufacturers who dedicate their entire efforts to perfecting specific audio equipment categories.
Boutique Brand
Born in 2016
Why we love this IEM
I Am Worth It
For the most passionate audiophiles who demand nothing less than audio perfection 💎, these exceptional products represent the absolute pinnacle of sound reproduction technology. When I designate something in this category, it means we've identified something truly extraordinary - a piece of equipment that transcends conventional standards of excellence. Think of these as the Rolls-Royce of audio - masterpieces that don't simply meet expectations but establish entirely new benchmarks for what's possible.
These aren't just premium products; they're timeless investments in musical excellence whose value transcends ordinary performance metrics. Each represents a fundamental redefinition of what's achievable in sound reproduction, incorporating innovations and craftsmanship that justify their exclusive status.
When you see "👑 I Am Worth It" products, understand that you're experiencing audio perfection - these masterpieces cater to those who recognise that true excellence knows no compromise.
Serious Audiophiles Only
For those who have ventured deep into high-fidelity audio 🎯, the pursuit of sonic excellence becomes an endless journey of discovery and refinement. I believe that serious audiophiles demand equipment that can satisfy the most exacting standards and deliver performance that pushes boundaries. These products represent the pinnacle of acoustic engineering, incorporating advanced technologies and meticulous craftsmanship that enable them to reproduce music with utmost fidelity.
Each product has undergone rigorous evaluation to ensure it delivers exceptional performance that discerning listeners demand, from precise frequency response to impeccable detail retrieval and sophisticated sound staging. These devices incorporate premium components and engineering excellence that justify their position at the apex of audio performance.
When you encounter "🦈 Serious Audiophiles Only" products, expect uncompromising performance that satisfies the most demanding requirements and elevates critical listening to new heights.
Tweak & Tune the Sound
Why settle for a fixed sound signature when you can shape your audio experience exactly to your preferences 🎛️?
I love products that put you in the driver's seat of your audio journey. These specialised headphones come equipped with sophisticated, customisable tuning capabilities that let you adjust every aspect of the frequency spectrum. Think of it like having a personal audio chef who can adjust the recipe to your exact taste - more bass for your workout playlist, clearer mids for podcasts, or sparkling highs for classical music.
The adjustable sound signature means you can fine-tune bass response, adjust midrange clarity, or enhance treble detail. Whether you prefer deep bass frequencies, crystal-clear midrange presence, or pristine high-frequency detail, these solutions put you in complete control of your sound 🎚️.
When you encounter "🔧 Tweak & Tune the Sound" products, expect complete sonic customisation that adapts perfectly to your unique listening preferences across different genres.
4.4mm Balanced Plug
Upgradeable Cable
Not satisfied with the current cable? No problem 🔧!
I believe in giving you complete freedom to customise your listening experience. These IEMs feature detachable cable systems that let you swap, upgrade, or replace cables whenever you want. Think of it like having a modular smartphone - you can upgrade individual components without replacing the whole device. Whether you're looking to improve sound quality, try different materials, or simply replace a worn cable, the choice is entirely yours.
The standardised upgradeable cable connection ensures compatibility with a wide range of aftermarket cables, giving you access to different sound characteristics and build qualities. This modular approach means your IEMs can evolve with your audio journey, allowing for easy maintenance and personalisation.
When you spot "🔌 Upgradeable Cable" products, expect future flexibility and the freedom to customise your audio experience through cable upgrades and replacements.
Why it Sounds Amazing
Planar Magnetic Driver
I love describing planar magnetic drivers as the Formula 1 cars of headphone tech. Unlike traditional dynamic drivers, planar magnetic drivers use an ultra-thin diaphragm suspended between magnets that pushes air with unmatched speed and precision. The result? Sound that’s exceptionally clean, fast, and rich in detail across the entire frequency range. 🎧
Now here’s what’s actually happening: because of the evenly distributed magnetic force across the diaphragm, you get lower distortion, tighter bass, and a superior transient response. Planars often need more amplification and are typically found in larger headphones, but the payoff is a sound that’s smooth yet revealing—incredibly accurate without being clinical. It’s the kind of driver that makes you rethink what your favorite track actually sounds like.
Balanced Sound Signature
In my experience, a balanced sound signature is like a well-cooked meal—nothing overpowering, everything in harmony. If you’re someone who listens to a bit of everything—rock one day, jazz the next—this is the tuning I’d recommend. It doesn’t boost any part of the sound unnaturally, so what you hear is often how the artist intended it. 🎧
Here’s what’s actually happening: the headphones don’t favour bass, mids, or treble excessively. This results in a neutral, natural, and versatile sound that suits a wide variety of music genres. While it may not feel as “exciting” as some more coloured tunings, balanced headphones tend to offer the most accurate reproduction, making them a favourite among audiophiles and studio pros alike.
Ultra-Wide Sound Stage
Do you wish to bring the concert hall to your ears 🏛️?
I love describing ultra-wide soundstage as "audio magic" that creates a breathtaking three-dimensional environment around your head. These specialised headphones feature an exceptionally spacious soundstage that creates the illusion you're sitting in the sweet spot of a magnificent performance venue. Think of it like teleportation technology for your ears - suddenly you're not wearing headphones, you're sitting in Carnegie Hall with perfect acoustics.
The precise instrument placement and remarkable sense of space work together to transport you directly into the music, making you feel as though you're experiencing a live performance. This creates a listening experience that's grand, enveloping, and incredibly detailed 🎭.
When you encounter "😳 Ultra-Wide Soundstage" products, expect concert hall acoustics that make you forget you're wearing headphones through sheer spaciousness and realism.
Crisp Vocals & Instruments
Vocals and instruments sound so good, it's like a warm hug 🤗!
I believe that when vocals are reproduced correctly, they should feel like the artist is performing right there with you. These headphones demonstrate exceptional prowess in reproducing clear, articulate vocals and instruments, with each element rendered in stunning detail and separation. Think of it like having front-row seats to an intimate acoustic performance where every breath, every string resonance, every subtle inflection comes through perfectly.
The natural timbre and tonal accuracy create an engaging presentation where every nuance is preserved while maintaining fatigue-free listening. Each word, note, and subtle inflection is reproduced with outstanding definition and emotional connection 🎤.
When you encounter "🍿 Crisp Vocals & Instruments" products, expect vocal excellence that brings you closer to the emotional heart of every performance.
Thick Bass / Kickass Bass
When I say kickass bass, I’m talking about bass that slaps you right in the face—in the best way possible. It’s that visceral, chest-thumping low-end that makes you feel like you’re in the front row of a concert or a nightclub. If you’re into hip-hop, EDM, Bollywood beats, or anything with a deep groove, this is where the fun begins. 🔊💥
Here’s what’s going on technically: the low-frequency range is heavily emphasised, resulting in powerful sub-bass rumble and impactful mid-bass slam. This kind of tuning brings weight, warmth, and physicality to your music. The trade-off? It might mask some midrange detail or high-frequency sparkle—but for bassheads, the emotional payoff is more than worth it.
Bright & Sparkly Highs
Who says treble can't be done right ⭐?
I tend to describe these headphones as having "magical sparkle" in the high frequencies that makes cymbals shimmer and vocals shine without ever becoming harsh. These products excel in delivering pristine, crystalline high frequencies with remarkable precision and finesse. Think of it like the difference between cheap glitter and real diamonds - both sparkle, but one does it with elegance and refinement that never hurts your eyes.
The treble presentation is masterfully tuned to showcase delicate nuances in the upper register, offering brilliant and engaging listening without fatigue. Every cymbal shimmer, violin overtone, and vocal harmony is reproduced with exceptional clarity and natural brilliance ✨.
When you see "✨ Bright & Sparkly Highs" products, expect extraordinary treble clarity that discovers new layers of detail while maintaining smooth, fatigue-free listening.
Needs Amplification
I tend to say this when a headphone or DAC just doesn’t wake up unless it’s got some real juice behind it. Think of it like a sports car that needs the right kind of fuel—without enough power, it won’t go anywhere near top speed. Some gear, especially those with high impedance or low sensitivity, demands a dedicated amplifier to reach its full potential.
Here's the trade-off: these headphones or IEMs may sound underwhelming straight out of a phone or laptop, but when paired with proper gear, they transform dramatically. You get tighter bass, better control, and improved resolution.
If you’ve got a power-hungry planar or a studio-grade headphone, investing in a portable or desktop amp will unlock nuance, dynamics, and depth that you’re otherwise missing out on. ⚡
An Exceptional Collaboration That Unlocks Speed, Clarity & Precision With FATfreq x Effect Audio Quantum










ConX 2-Pin Connector
FATfreq x Effect Audio Quantum features a ConX 2-pin 0.78mm connector for seamless compatibility.
4.4mm Termination
FATfreq x Effect Audio Quantum equips a 4.4mm balanced termination to connect with various audiophile-grade devices.

Accessories to Get you Started

2. Ares S II (4.4mm)
3. NOAH Modules – Black ‘Power’ Module, Blue ‘Control’ Module, and ‘SuperStage’ Module
4. FATfreq x Effect Audio Black Metal Case
5. Ear Tips
6. Warranty Card
Don't sweat it, this
FATfreq X Effect Audio - Quantum comes with a 1 Year warranty
from FATfrequency that covers manufacturing defects.
All products featured on Headphone Zone are backed by an original manufacturer's warranty.
Read more about FATfrequency's warranty in India.

Quantum is the king of versatility in FATfreq's lineup, and is a precise, accurate IEM with massive low end impact, custom module tuning options, an upgrade cable out of the box, and a unique build that could be a great fit in anyone's IEM collection.
With its absolutely coherent and precise reproduction, the Quantum is perhaps the IEM for anyone looking for their endgame in this price range!
Have a question? Get in touch!
Check out the most common questions our customers ask. Still have questions? Talk to our Headphone Gurus.

What is the warranty period on the FATfreq X Effect Audio Quantum and how do I claim warranty?
What type of driver does the FATfreq X Effect Audio Quantum use?
What makes the ResoFlow™ Acoustic System special?
What is the Noah Module System and how does it work?
Is the FATfreq X Effect Audio Quantum suitable for professional studio or stage use?
What type of connectors and termination does it use?

Other Details
Generic Name | Headphone |
Importer Details | Importers Name: Ferrari Video Address: 63/18, 1st Main Road, Gandhi Nagar, Chennai - 600020 Contact No: 044-24420733 |
Net Quantity | 1 |
Manufacturer Details | Name: Fatfreq Pte. Ltd Address: 29A Mosque Street, S059507 |
Package Contents | FATfreq X Effect Audio Quantum Ares S II (4.4mm) NOAH Modules – Black ‘Power’ Module, Blue ‘Control’ Module, and ‘SuperStage’ Module Fatfreq x Effect Audio Black Metal Case Ear Tips Warranty Card |