Description
Symphonium Crimson IEM: Elevating Your Sonic Experience
Immerse in Unprecedented Sound
Step into a new realm of auditory delight with the Symphonium Crimson IEM, redefining the standard for audio excellence. The Crimson's audacious and enthralling sound profile, featuring an exceptionally dynamic bass reminiscent of high-end speaker configurations, sets a new benchmark for immersive listening. Leveraging our proprietary PHAT technology, this IEM amplifies Symphonium's signature treble response to deliver a mesmerizing sonic experience.
A Symphony of Clarity and Depth
The Crimson's treble not only boasts a velvety smoothness but also extends elegantly, providing class-leading resolution with a layered and spacious stereo image. Revel in organic vocals, paired with impeccable control and authoritative low-end presence, mimicking the feeling of standing in front of a live stage. The culmination of these characteristics makes the Crimson dynamically engaging and uniquely captivating.
Rediscover Your Love for Music Again!
4 Way TrueX™ Crossover | 6.05 ohms Impedance @ 1kHz | 8-Wire Novaron Cable (Optional)

Unveiling Technological Fusion: FLAT + PHAT
Experience a harmonious blend of cutting-edge technologies with the Crimson's fusion of PHAT and FLAT advancements. PHAT technology eliminates unnecessary frequency inversions and phase cancellations, while FLAT technology ensures low impedance and immunity from mismatch challenges. The Crimson stands ready to tackle any sonic landscape with finesse.

Redefined Shell for Maximum Comfort
Delight in a fresh design language as the Crimson introduces a reimagined shell, meticulously shaped based on extensive community feedback. Tailored for smaller ears, the redesigned shell features a shorter nozzle and a gently rounded form for a snug fit. Crafted from high-grade T6 heat-treated AL6061 Aluminium alloy, the Crimson guarantees durability and enduring performance.

Crafted in Forged Carbon: A Visual and Textural Marvel
Say Forged Carbon? The Crimson introduces a new color scheme and a premium forged carbon faceplate, paying homage to our brand's origins and resilience. This material, renowned in the realms of award-winning jewelry, watches, and luxury vehicles, ensures each faceplate is a unique masterpiece, reflecting the Crimson's exclusive status.

Exclusive Cable for Ultimate Versatility
The Crimson comes with an Altalune Audio Novaron 26AWG Type 2 Litz OCC copper cable, featuring a unique construction to complement the IEM. Choose between a 4-wire or 8-wire configuration to suit your preferences. The exclusive Altalune Novaron cable is terminated with super low impedance OE interchangeable plugs, offering compatibility with 3.5mm and 4.4mm heads for a future-proof, flexible audio experience.

TrueX™ 4-Way Crossover: Precision in Sound Crafting
Utilizing a true 4-way crossover, the Crimson fine-tunes each driver to exact specifications, ensuring an unparalleled sonic journey.

PrecisionMatch™: Elevating Your Listening Standard
Every Crimson undergoes rigorous channel matching and reference matching with PrecisionMatch™ technology, guaranteeing a superior and consistent listening experience.

Tailored Comfort with Quality Eartips
Paired with Azla Sednafit Standard and Divinus Velvet Eartips, the Crimson ensures a flawless fit for every listener, adding a touch of comfort to your sonic exploration.
Driver Crossover: TrueX™ Custom 4-Way Crossover with FLAT™ Technology
Frequency Response: 10Hz - 24kHz, ± 2 dB
Sensitivity: 106dB/Vrms @ 1 kHz
Impedance: 6.05 Ohms @ 1 kHz
Socket: Spring Loaded 0.78mm 2-Pin
Cable: 26 AWG Pure OCC Copper Litz Novaron
[4-Wire or 8-Wire Option Available]
OE Plug Termination w/4.4mm and 3.5mm plugs
Cable Impedance:
0.12 Ohms (3.5mm), 0.12 Ohms (4.4mm) @ 1kHz (8-Wire)
0.20 Ohms (3.5mm), 0.20 Ohms (4.4mm) @ 1kHz (4-Wire)
Warranty: 1-Year Limited
Warranty Period: 1 Year from the date of Invoice
Covered: Manufacturing Defects Only
Warranty Form: https://www.theaudiostore.in/pages/warranty-claim-form
Symphonium Audio is a Singaporean audio company that is dedicated to creating premium quality in-ear monitors (IEMs) for audiophiles. They believe in providing music lovers with an immersive audio experience through their products, which are crafted with attention to detail and precision engineering. Symphonium Audio's IEMs are designed to deliver a balanced and natural sound signature, making them ideal for critical listening and studio use.
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TRUSTED BY OVER 50K+ MUSIC ENTHUSIASTS
Let customers speak for us
from 6841 reviews
Very quick and satisfying deliveries along with a wide range of products
Absolutely loved the soundstage and neutral bright tuning of this iem.
Best IEM for beginners. It helps to know what music taste matches to you.
These are great, every element of a song is well balanced. However, that balance is a double-edged sword, as it lacks bass. So, if you're looking for a strong base signature, you might want to choose something else or use an equalizer, which is what i'm doing.
This is a solid cable, which delivers stunning sound. I use this cable to connect my Hifiman EF400 to Fiio K15. This is a major upgrade to the sound (as compared to the two standalone).
I bought Cadenza as my first IEMs, before buying these I researched a lot about every kind in this budget I could go for, I streched and bought these as something which sounds, harmonious, smooth and comfortable for long sessions, even then the details and the sound still puts me in awe beating any earbuds and in ear sound system I have ever tried.
One of the best IEM.
EarAcoustic STA-Hi End Series IEM is too warmform me which is my sound signature. Beryllium driver tuned so fantastic. When was received this never go off from my ears to 4 hrs. I have so many brands and so many chifi IEMs used but this EarAcoustic STA-Hi End Series IEM is totally blowned me away. That's why this EarAcoustic STA-Hi End Series IEM is highly recommended. Thanks once againMr Pritam Ji for suggesting me so wonderful IEM in audio library collection.
The product came with all the accessories it should have, the box wasn't damaged at all and delivery was quick. It only took 2 days to be delivered and came with good enough packaging.
Overall, Very satisfied by theaudiostore. While this was my first time buying from them, It definitely won't be the last.
When I was a kid, somewhere around 2005–2007, I was gifted a Sony cassette Walkman. I was too young to care about model numbers or sound signatures. I just knew that pressing play felt important. That Walkman is gone now. Probably sacrificed to the great black hole where old chargers, socks, and childhood joy go to die. But the want never left.
So years later, I did what any emotionally stable adult does. I bought a Walkman again. This time, the Sony NW-A306. And no, this is not nostalgia cosplay. This is something else.
-> A Small Device With Strong Opinions:
The NW-A306 looks like a cute mini smartphone that went on a digital detox retreat. No camera. No speaker. No SIM. No “bro just one notification”. It exists only for music and has zero interest in your productivity apps or reels.
Physically, it feels solid and intentional. Buttons still exist. Sony clearly assumes you might listen to music without staring at a screen like it owes you money.
-> Android, But With Discipline:
It runs Android 14 and yes, streaming apps work. YouTube, YouTube Music, Spotify, Apple Music, Tidal, ... etc all fine. But here’s the thing, you can choose how modern you want it to be.
With Google services running, I casually listened for about 6 to 7 hours and still stayed under 60 percent battery usage. That’s respectable. Disable Google services and background nonsense, and suddenly the battery life becomes “arre yeh toh chale hi ja raha hai” level good.
Sony didn’t brute-force anything. This device feels tuned, not overpowered.
-> Sound - Sony Being Sony:
Let’s clear this upfront. Walkman is the legacy on which the iPod later thrived. Apple polished the idea. Sony invented the feeling.
And yes, it is Sony, so bass exists. No question about that.
The bass here is not the shaadi DJ type that enters before the song does. It is controlled, confident, and supportive. With KZ ZAS and Sony XM4s, the sound is clean, warm when needed, detailed when it matters, and never tiring.
As a USB DAC, this thing is frankly ridiculous for its size. Plug it into a PC and it behaves like a serious audio device pretending to be small for fun. Stable, clean, no tantrums.
This is not five-minute wow sound. This is “ab bas ek album aur” sound.
-> Local Music and the Joy of Making Things Difficult:
Now comes the part streaming apps will not like.
Yes, we have everything. Spotify, Apple Music, Tidal, Amazon, Qobuz, YouTube. Music is everywhere. And somehow, nothing sticks.
Algorithms keep suggesting. You keep skipping. Half the time you don’t even remember what you listened to two hours ago. Music becomes vibe. Background. White noise with feelings.
Owning music changes behaviour.
Ripping CDs into FLAC, fixing metadata, web scraping album art, organizing albums. This is effort. And effort creates attention. You listen to albums. You read lyrics. You notice production. You sit still.
Sony Music Center on Windows actually helps instead of testing your patience. Metadata, album art, even 12-tone analysis. Organizing music feels intentional, not like punishment for liking files.
The NW-A306 makes music feel yours. Not rented. Not borrowed. Yours.
Ironically, it uses modern tech to make things slightly complicated on purpose, so listening becomes simple again.
-> So Why Does This Exist?
The NW-A306 is not trying to replace your phone. It is reminding you why music once deserved its own device.
It is focused. It is disciplined. It does not beg for attention. And that is rare now.
If you treat music as something to truly listen to and not just something playing while you scroll, this Walkman makes complete sense. Emotionally. Practically. Logically.
Also, it feels really good to own your music again. Like, irrationally good.
Some loops are worth closing.
i was scared what if i will get scammed, or will the put stone in the box ,
but nothing happened like that, best unboxing experience, do take video, as its mentioned in the package either,
product 10/10
the only issue the extra included case has no guide how to put earbuds in it and as i am an idiot i inserted it wrong took 45 minutes reinserted, fites to tight,
if you are stuck just like me - [****] email me i will help,
best audio , ANC is decent, call good, battery decent, overall excellent package, didnt find in ear detection, or find my earbuds only thing which arnt deal breakers
Amazing product and quick delivery.
There is no hissing sound with Kefine Klean iem
It's really a good beginner iem who qre comes into the iem first time
From perspective the wide bore tips were very flat in term of eq, normal bore and silicon tips performanced the best







