The Binary Dynaquattro 4DD IEM has an impressive array of four drivers: 10mm, 8mm, 6.8mm dynamic drivers, and a 6mm passive diaphragm. These combine to create a substantial 193 square millimetres of total diaphragm area. Including a three-way frequency crossover enhances the pair's capability to deliver a wide frequency response range with minimal distortion and high-resolution clarity, promising an immersive audio experience.
Experience superbly detailed sound across a broad frequency spectrum. The Dynaquattro's three dynamic drivers, alongside a passive diaphragm, work harmoniously to produce an exceptionally clear and balanced sound. Each driver operates through its independent sound guide structure, complemented by a precisely engineered three-way frequency crossover. This setup ensures accurate sound reproduction, further optimized by a high-precision Klippel system, which meticulously fine-tunes the vibration modes of the diaphragms.
Delve into deep, impactful bass with the Dynaquattro's powerful 10mm dynamic driver. This large driver is designed with a composite dual-diaphragm, featuring a 10mm titanium dome-coated silicone grainless diaphragm and a 6mm wool paper cone passive diaphragm. Together, they deliver a crisp, detailed low-frequency response that adds depth and richness to your music.
The Dynaquattro excels in delivering high-resolution sound in the mid and high-frequency ranges. The 6.8mm high-frequency driver features a high-rigidity aluminium diaphragm, providing well-defined and detailed high tones. Meanwhile, the 8mm midrange driver uses a cermet textureless diaphragm, constructed from lightweight yet durable metal, ensuring fast transients and crisp, clear output.
Designed with precision, the Binary Dynaquattro incorporates a three-way physical frequency crossover. Each driver is connected to its independent acoustic tube, meticulously calculated and thoroughly tested to ensure superior sound delivery. This crossover system creates a rich, delicate, and well-layered audio experience, minimizing distortion and maintaining sound integrity across all drivers.
The Dynaquattro isn't just about superior sound; it also boasts a stylish design. The CNC-machined aluminium alloy face panels draw inspiration from the four internal dynamic drivers, featuring industrial-grade patterns like gears and machinery motifs. These elements reflect Binary's commitment to professionalism, precision, and innovation.
Included with the Dynaquattro is a high-purity OFC (oxygen-free copper) silver-plated cable, equipped with an interchangeable termination plug system. This system includes both a 3.5mm single-ended and a 4.4mm balanced plug, ensuring versatility in connectivity. The universal 2-pin 0.78mm connectors allow for easy cable replacement, enhancing the longevity and adaptability of the IEMs.
Drivers: 10mm+8mm+6.8mm Dynamic Drivers+6mm Passive Diaphragm.
Cable: High-purity OFC Silver-Plated Cable with Interchangeable Plugs: 3.5mm and 4.4mm Plugs.
Impedance: 23Ω@1kHz.
Sensitivity: 111dB/Vrms.
Effective Frequency Response Range: 20Hz-20kHz.
THD+N: <1%@1kHz. Binary Acoustics has introduced
Microphone: No
Warranty: 1 year
Warranty Period: 1 Year from the date of Invoice
Covered: Manufacturing Defects Only
Warranty Form: https://www.theaudiostore.in/pages/warranty-claim-form Cable: 1-month warranty only for manufacturing defects only
Binary Acoustics has been dedicated to enhancing sound quality since 2017. Our mission is to attain the utmost compact size and a sleek design. We craft our products based on the philosophy of "Let your ears convey sound and emotion." Our innovative designs seamlessly integrate with the ears during musical experiences, enabling users to immerse themselves fully in the realm of music and feel the authentic, pure sound.
I went to the store with to purchase aful P7 but ultimately bought dynaquattro Pritam was the big help in deciding the purchase he really understands the ones taste in music and recommends accordingly really happy with the purchase now for the iem dyna really shines in the base department but slightly lacks in the airyness you wont get timbre as much as compared to da vinchi but male vocals and bassy instruments really shines without fatigue and one can enjoy music for hours as there is little to no harshness in the tone if you like music like abhangs go for it without any second thought
Improved my listening experience
Fantastic sound quality!
It's warm/bassy sound is what I like the most. The emphasis is more on sub bass but also not in ur face. Mid bass also sounds clean without being shouty. Treble is really smooth with slight sparkle which is great if ur treble sensitive. I can listen to these for hours at work without being distracted or fatigue. Good fit and build quality. Any genre sounds good on this iem.
As redditors said its good. But might be boring at initial iem try. App has lot of EQs to tweak and play
I would like to thank Purecast & Pritam ...I was not sure if this was required. I however noticed it's not a normal dac it's a DAC Amp so it also amplifies sound...it comes in a cool packaging with cover and I am thankful that Audiocular was thoughtful to add a typeC to Type A convertor as I am using this mainly in my Dell laptop. Thanks Audiocular.
Bought the Moondrop Dawn Pro Balanced DAC/AMP recently. Build feels premium with a sleek metal body, swappable 3.5 mm & 4.4 mm outputs, plus handy volume buttons. Noticed extra loudness and a subtle but clear improvement in my IEMs. For the price, totally worth it! 🎶
I used lots of earphones and earbuds, neckband but this IEMs sound is different unbelievable I loved it Thanks 👍🏻
Excellent product. Super premium and sounds balanced.
I purchased audiocular spark DAC from audio store few days ago. I was really confused between spark and ja11 but finally got this. The DAC is best here , it works well with my kz castor pro and Simgot ew300. Just purchase this instead of ja11.
THE HEADPHONE IS ONE OF THE BEST WHICH DOESN'T NEED ANY TEST BECAUSE ITS THE BEST, THE BLUETOOTH RANGE IS SO LONG THAT ONCE I FORGOT MY MOBILE WHILE GOING TO MARS , NORMAL HEADPHONE WILL DISCONNECT IN THAT RANGE ABOUT 33.9 MILES BUT THEN ALSO THE HEADPHONE DOESN'T DISCONNECTED AND THE MUSIC WAS STILL PLAYING NOW I WAS COMING BACK FROM MARS AND TYPED THE REVEIW WITH MY BARE HANDS 😀
Although termed as Basshead, it's clean and crisp. Bass knows when to punch and when to calm. Upgrading from Juzear Defiant which is itself a great allrounder to its price. Thoroughly enjoying the Martilo. Finally great service by TAS. Looking forward for more.
good build qualityand High quality audio output
Absolutely a beast, had to wait since it was out of stock. This is the best under 3K and probably the best with Mic under 5k.
If you are a beginner audiophile and wanted to invest friendly budget IEM then EarAcoustic STA-Hi End Series IEM is a way to go. The sound is awesome and you can hear every node it contains.
It is the best and clean sounding IEM, perfect for the Beginner.
I love the fact that I can change the nozzle and its a little different sounding, so its two in one.
The cable quality is out of the world no external sound when I touch it.
I can hear so many details clearly. I say please go for this, it is perfect first IEM and the Perfect Upgrade if you had IEM under 2k before
It provides Awesome sound quality go and buy it m
🎧 KZ Castor Pro IEM – Review
🔊 Sound Quality
The KZ Castor Pro delivers clear and detailed sound with excellent separation across lows, mids, and highs. The decent thumping bass is tight and controlled, giving energy to tracks without overwhelming the vocals or instruments. Its super-balanced tuning ensures a natural, enjoyable listening experience suitable for all genres.
🎚 Unique DIP Switch Equalizer
What sets the Castor Pro apart is its DIP switch physical equalizer. With up to 16 different tuning options, it allows listeners to adjust the sound profile on the go—boosting bass, enhancing treble, or keeping it neutral. This feature gives it a level of flexibility rarely seen in IEMs at this price point.
🔇 Noise Isolation
Although it lacks active noise cancellation, the design offers an excellent passive seal. The snug fit ensures that outside noise is effectively blocked, making the listening experience immersive and ensuring ANC doesn’t feel like a missing feature.
🎼 Hi-Res & DAC Performance
For those using Hi-Res lossless audio, pairing the Castor Pro with a DAC is highly recommended. The extra power and clarity from a DAC enhance the already impressive soundstage, detail retrieval, and overall dynamics, making the listening experience truly premium.
💰 Value for Money
At its smart price, the KZ Castor Pro punches well above its weight. It combines detailed sound, punchy bass, balanced tuning, and innovative features—making it a strong choice for both audiophiles on a budget and everyday music lovers.
Brand Warranty
100% Original products with brand warranty
7 Days Replacement
On all orders*
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Ships in 24 Hours*
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Sturdy and reliable. Very affordable. Value for money.
Bought this as a spare USB-C dongle for my windows PC and was not expecting much out of these - but boy am I surprised! Spark punches far above its weight. Drives my Hydro (2DD+8BA) and 7Hz Timeless AE (Planar) effortlessly. With ~63mW @32 Ω on tap, the sound delivery is very high with clean detail and excellent staging. No distortion, just a black background and dynamic sound that makes the music come alive. Compared to the other DAC dongles and Bluetooth earhooks, it is excellent for the price. Recommended!
good
good
Excellent noise cancellation, balanced sound profile..
Audio clarity is better than regular earphones with the same price range.
I haven't seen a great product in this price!
The 3.5mm Salnotes is exactly the same as Type C cable. Very good product.
Got delivered on the delivery,date good support by the audio store team on WhatsApp and on reddit too by pritam halpawat sir , overall very happy with the site and iems
worth for money