











1Custom - Junior
In-Ears With 1 DD + 2 BA Drivers
Unfortunately, even if we desire to, we won't be able to resurrect this product. The Museum is where we pay our respects to end-of-life, old, archived, but not forgotten products. This page was made with a lot of love and will live on for posterity. What to say, we're sentimental people. 😔
While this product is gone forever, here are others we recommend
Why 1Custom is Special
Designed in Singapore
Established & Reputed
Trust us, our reputation speaks for itself 🏆!
I believe that when a brand has decades of proven excellence, you can invest with confidence knowing your purchase is backed by years of audio engineering expertise. These products come from manufacturers with extensive histories of innovation and unwavering commitment to sonic excellence. Think of them like luxury watch brands - their reputation has been earned through decades of consistent quality and innovation.
With their extensive history of innovation and countless satisfied customers worldwide, you can be confident your investment is backed by proven audio engineering expertise and industry leadership 📈.
When you see "🎖️ Established & Reputed" products, expect time-tested excellence from manufacturers who've consistently demonstrated mastery in audio engineering for generations.
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
Why we love this IEM
Audiophile Community Favourite
When I see a product that keeps coming up in forums, Reddit threads, and community meet-ups, I know it’s earned its place. "Audiophile Community Favourite" is our way of spotlighting the gear that real listeners — not just reviewers — swear by. 🦋
These are products that enjoy a sort of cult following for all the right reasons: consistently great tuning, build, and value. They're the kind of recommendations you'd get from a friend deep in the hobby. If you're the type who likes going with a proven crowd-pleaser, these picks are beloved by thousands of ears.
When you see '🦋 Audiophile Community Favourite' products, expect reliable recommendations backed by passionate users, often refined over years of trust and love from the community.
For Budding Enthusiasts
In my experience, discovering good audio gear early on is a bit like tasting great coffee for the first time — once you've had a sip, you're hooked. "For Budding Enthusiasts" is a badge we use for products that are perfect gateways into the audiophile world. They're easy to use, not overly expensive, and give you a real taste of what good sound can be — without needing a degree in audio engineering. 🎧
These are the IEMs, headphones, and DACs that let you dip your toes into premium sound without drowning in choices. They balance performance, price, and practicality beautifully. Whether you're buying your first serious pair or helping someone else start their journey, these picks deliver satisfaction straight out of the box.
When you see '🪴 For Budding Enthusiasts' products, expect simple setups, solid sound quality, and an easy upgrade path — perfect for your first foray into better audio.
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.
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
Hybrid Drivers
Looking for a combo of rich and detailed sound 🎵?
I love describing hybrid drivers as getting "the best of both worlds" in one beautifully engineered package. These headphones feature sophisticated hybrid technology that masterfully combines different driver types to deliver extraordinary sonic experiences. Think of it like having a sports car with luxury comfort - you get the precision and speed of performance engineering combined with the richness and smoothness of premium materials.
By integrating multiple driver technologies, these devices achieve both rich, full-bodied sound and intricate detail reproduction. The result is a harmonious blend that captures subtle nuances and powerful dynamics, with each driver type contributing unique strengths to create a complete audio experience ⚖️.
When you see "🔈 Hybrid Drivers" products, expect expertly balanced performance that combines the best characteristics of different driver technologies for complete musical enjoyment.
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.
Sharp & Precise Details
Are you a lover of sharp and precise details 🔍?
I believe that detail retrieval is like having audio superpowers - suddenly, you hear things in familiar songs that you never knew existed. These premium headphones are meticulously engineered to deliver remarkably detailed and precise sound reproduction, capturing every subtle nuance with exceptional accuracy. Think of them like high-resolution cameras for your ears that reveal the finest textures and micro-details that most headphones simply miss.
The carefully tuned drivers and advanced acoustic design ensure even the most delicate musical elements are reproduced with stunning precision. From the gentle brush of a cymbal to the subtle resonance of acoustic instruments, these products capture and present every sonic detail with remarkable accuracy 🎯.
When you see "📌 Sharp & Precise Details" products, expect extraordinary detail resolution that reveals new layers in familiar recordings with stunning clarity and precision.
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.
I first thought that the customizable switches were a gimmick. But they're not. My favourite setting is 'Detail'. It's incredible the detail and nuances that this IEM brings to the table. But the USP for me is the ultra-wide Soundstage. I haven't heard that on any other IEM.

About RAGHAV SOMANI
Raghav Somani is the Founder & CEO of Headphone Zone. An avid audiophile and musician since 2008, his choice of headphones include STAX Electrostats, Audeze LCD 3, and for music on the go, the JH Audio Roxanne + Astell&Kern SP1000 is never too far away. On his playlist, you'll find A.R. Rahman, Michael Jackson, and the Eagles.
DESCRIPTION
HYBRID TRIPLE DRIVER SETUP WITH TUNING SWITCHES FOR CLEAN AUDIO
The 1Custom Junior is designed with utmost precision for the best audio reproduction. 1Custom Junior features a hybrid driver configuration with two different types of driver technologies. It comes equipped with a single dynamic driver and two balanced armature drivers. With this, the earphone presents a high-resolution outcome. Each of the drivers is independently fine-tuned for a wide soundstage with lesser resonance. There are also tuning switches on the IEM allowing you to tweak the sound to your liking. You can feel free to play around with the tuning switches and discover your preference. They are pretty effective while not overpowering the other frequencies in any way. The structural design offers more consistent sound across all frequencies to deliver shiny highs and deep bass.




ERGONOMIC DESIGN FOR A COMFORTABLE WEARING EXPERIENCE
1Custom Junior has been designed keeping comfort in mind. The redesigned 1Custom Junior features an ergonomically shaped earbud which allows for a secure and snug fit. This new design allows the earbuds to ergonomically conform to the curvature of the concha offering a better fit. The shiny coating on the buds ensures the longevity of the sheen of each shell. The 1Custom Junior also has metal nozzles that have a lip. The lip will be useful to ensure that most ear tips will stay in place and not slide off and get stuck in your ears. This allows the nozzle to sit more closely to the ear, making it super comfortable to wear for long listening sessions and do not cause any fatigue.




DETACHABLE CABLE WITH 2-Pin CONNECTOR AND ACCESSORIES INCLUDED
The 1Custom Junior comes bundled with a detachable cable with an 2-Pin connector. This cable is made of high-quality materials, allowing for transparent and detailed sound transmission. There are also 2 sets of high-quality ear tips included with 1Custom Junior, allowing users to change the tips best suited for a snug fit. 1Custom Junior also comes with 1 padded resin hard case to easily store and transport your IEMs.



SPECS
DRIVERS | 1 Dynamic Driver + 2 Balanced Armature |
CONNECTOR | 2-Pin |
TERMINATION | 3.5mm Stereo |
BOX CONTENTS | 1. 1Custom Junior |
2. 2Pin OFC Cable x 1 | |
3. Eartips (S/M/L) x 1 pair | |
4. Cleaning Tool x 1 | |
5. Carrying Case x 1 |
FAQs
What is the warranty period on the 1Custom Junior and how do I claim warranty?
The warranty period on 1Custom Junior is for 1 year. Read more information about 1Custom's warranty in India. click here.
How do the tuning switches contribute to the sound of the 1Custom Junior?
The tuning switches on the IEM allow you to tweak the sound to your liking. You can feel free to play around with the tuning switches and discover your preference. They are pretty effective while not overpowering the other audio frequencies in any way. This is a convenient and easy way to personalise the 1Custom Junior’s sound to your liking.
Does 1Custom Junior have a remote and microphone?
No, the 1Custom Junior believes in minimalism. Also, what is a remote when compared to the gorgeous sound it offers.
Does the 1Custom Junior come with detachable cables?
Yes, the cables are indeed detachable. Making for easy storage and convenient for whenever you want to replace or upgrade cables.
How many drivers does the 1Custom Junior come with?
The 1Custom Junior is loaded with Hybrid Drivers - 2 Balanced Armature and 1 Dynamic Driver.
Will the 1Custom Junior work with my smartphone?
Yes! The 1Custom Junior is compatible to work with both Android and iOS.
HYBRID TRIPLE DRIVER SETUP WITH TUNING SWITCHES FOR CLEAN AUDIO
The 1Custom Junior is designed with utmost precision for the best audio reproduction. 1Custom Junior features a hybrid driver configuration with two different types of driver technologies. It comes equipped with a single dynamic driver and two balanced armature drivers. With this, the earphone presents a high-resolution outcome. Each of the drivers is independently fine-tuned for a wide soundstage with lesser resonance. There are also tuning switches on the IEM allowing you to tweak the sound to your liking. You can feel free to play around with the tuning switches and discover your preference. They are pretty effective while not overpowering the other frequencies in any way. The structural design offers more consistent sound across all frequencies to deliver shiny highs and deep bass.




ERGONOMIC DESIGN FOR A COMFORTABLE WEARING EXPERIENCE
1Custom Junior has been designed keeping comfort in mind. The redesigned 1Custom Junior features an ergonomically shaped earbud which allows for a secure and snug fit. This new design allows the earbuds to ergonomically conform to the curvature of the concha offering a better fit. The shiny coating on the buds ensures the longevity of the sheen of each shell. The 1Custom Junior also has metal nozzles that have a lip. The lip will be useful to ensure that most ear tips will stay in place and not slide off and get stuck in your ears. This allows the nozzle to sit more closely to the ear, making it super comfortable to wear for long listening sessions and do not cause any fatigue.




DETACHABLE CABLE WITH 2-Pin CONNECTOR AND ACCESSORIES INCLUDED
The 1Custom Junior comes bundled with a detachable cable with an 2-Pin connector. This cable is made of high-quality materials, allowing for transparent and detailed sound transmission. There are also 2 sets of high-quality ear tips included with 1Custom Junior, allowing users to change the tips best suited for a snug fit. 1Custom Junior also comes with 1 padded resin hard case to easily store and transport your IEMs.



DRIVERS | 1 Dynamic Driver + 2 Balanced Armature |
CONNECTOR | 2-Pin |
TERMINATION | 3.5mm Stereo |
BOX CONTENTS | 1. 1Custom Junior |
2. 2Pin OFC Cable x 1 | |
3. Eartips (S/M/L) x 1 pair | |
4. Cleaning Tool x 1 | |
5. Carrying Case x 1 |
What is the warranty period on the 1Custom Junior and how do I claim warranty?
The warranty period on 1Custom Junior is for 1 year. Read more information about 1Custom's warranty in India. click here.
How do the tuning switches contribute to the sound of the 1Custom Junior?
The tuning switches on the IEM allow you to tweak the sound to your liking. You can feel free to play around with the tuning switches and discover your preference. They are pretty effective while not overpowering the other audio frequencies in any way. This is a convenient and easy way to personalise the 1Custom Junior’s sound to your liking.
Does 1Custom Junior have a remote and microphone?
No, the 1Custom Junior believes in minimalism. Also, what is a remote when compared to the gorgeous sound it offers.
Does the 1Custom Junior come with detachable cables?
Yes, the cables are indeed detachable. Making for easy storage and convenient for whenever you want to replace or upgrade cables.
How many drivers does the 1Custom Junior come with?
The 1Custom Junior is loaded with Hybrid Drivers - 2 Balanced Armature and 1 Dynamic Driver.
Will the 1Custom Junior work with my smartphone?
Yes! The 1Custom Junior is compatible to work with both Android and iOS.
1 DD + 2 BA Hybrid Drivers
1 DD + 4 BA Hybrid Drivers
1 DD + 3 BA Hybrid Drivers
⚖️ Balanced Sound Signature
⚖️ Balanced Sound Signature
⚖️ Balanced Sound Signature
😳 Ultra-Wide Sound stage
🍿 Crisp Vocals & Instruments
📌 Sharp & Precise Details
✨ Bright & Sparkly Highs
🍰 Layered and Nuanced Sound
🍿 Crisp Vocals & Instruments
🍿 Crisp Vocals & Instruments
💣 Kickass Bass
📌 Sharp & Precise Details
🍰 Layered and Nuanced Sound
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🔍 Perfect to Analyse Music
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1. 1Custom Junior
2. 2Pin OFC Cable X 1
3. Eartips (S/M/L) X 1 Pair
4. Carrying Case X 1
1. AFUL Performer 5
2. Detachable Cable
3. Carrying Case
4. Silicone Eartips (S, M, L) * 6
5. User Manual
1. Gizaudio X Binary Chopin
2. Detachable Cable
3. Eartips * 3
4. Pouch * 2
5. Carrying Case
6. Cleaning Tool
7. User Manual
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35 Ohms
12 Ohms @ 1kHz
-
110dB@1kHz
122dB/Vrms@1kHz
2-Pin Upgradable Cables
0.78mm 2-Pin Upgradable Cables
2-Pin Upgradable Cables
Don't sweat it, this
1Custom - Junior comes with a 1 Year warranty
from 1Custom that covers manufacturing defects.
All products featured on Headphone Zone are backed by an original manufacturer's warranty.
Read more about 1Custom's warranty in India.
"The stock tonality of the Junior is on the slightly brighter side, but it does offer a smooth bass region and a euphonic midrange with a wide soundstage."
Read More"If you’re looking for a comfortable IEM with switches to slightly tweak the sound, a nice build quality, I totally recommend getting the 1Custom Junior IEMs from them."
Read More"The 1Custom Junior from Jaben Singapore has an excellent value. The Bass is quite beatiful, with an excellent amount of impact, a nice sub-low extensions, mid-bass presence too."
Read MoreHave 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 1Custom Junior and how do I claim warranty?
How do the tuning switches contibute to the sound of the 1Custom Junior?
Does 1Custom Junior have a remote and microphone?
Does the 1Custom Junior come with detachable cables?
How many drivers does the 1Custom Junior come with?
Will the 1Custom Junior work with my smartphone?
