BINARY – EP321 MEMS In Ear Monitor with geometric steel faceplate and transparent resin shell for premium audio and ergonomic fit.
BINARY – EP321 MEMS Tribrid In Ear Monitor featuring 2DD, 3BA, and 1 MEMS drivers for high-fidelity sound and immersive listening.
Exploded view of BINARY – EP321 MEMS In Ear Monitor showing triple-driver configuration for dynamic range and tonal accuracy.
Close-up of MEMS driver from BINARY – EP321 In Ear Monitor highlighting advanced treble speed and tonal coherence technology.
Colorful geometric faceplates of BINARY – EP321 MEMS IEMs crafted from CNC steel and 3D-printed resin for durability and comfort.
BINARY – EP321 MEMS In Ear Monitor with balanced W-tuning delivering lifelike vocals and accurate midrange performance.
Hybrid bass driver architecture of BINARY – EP321 MEMS IEMs showcasing dynamic and passive components for deep bass response.
Sound frequency response graph of BINARY – EP321 MEMS In Ear Monitor showing detailed tuning across the audio spectrum.
Lightweight 7.5g BINARY – EP321 MEMS IEM with CNC-machined stainless steel faceplate designed for standout aesthetics and comfort.
High-precision 3D-printed acoustic cavity machines used in crafting BINARY – EP321 MEMS In Ear Monitors for optimal sound quality.
Technical specs and eartip options for BINARY – EP321 MEMS In Ear Monitor including impedance, sensitivity, and frequency range.
Complete packing list of BINARY – EP321 MEMS IEMs with case, cable, eartips, and accessories for premium unboxing experience.
Silver-plated OFC cable with 2-pin connectors and 3.5mm/4.4mm support included with BINARY – EP321 MEMS In Ear Monitor.
Side view of BINARY – EP321 MEMS In Ear Monitor with transparent housing and ergonomic design for high-end audio performance.

Binary Acoustics

BINARY – EP321 MEMS 2DD + 3BA + 1 MEMS Tribrid Drivers In Ear Monitor

Sale price₹ 30,690Regular price MRP:₹ 51,199

    2DD + 3BA + 1MEMS Tribrid Drivers For Ultimate Resolution

    Direct-Drive MEMS Driver Extends Treble To 40khz

    Silver-Plated Cable Offers 3.5mm/4.4mm Versatility

    W-Shaped Tuning Offers Deep Bass, Clear Mids & Sparkling Highs

    3D-Printed Resin Shells With Premium Stainless Faceplates

    Lightweight & Ergonomic Design For All-Day Comfort
Audio connectivity
Audio connectivity: 4.4mm
Estimated Delivery within 4 to 6 weeks.

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Estimated Delivery within 4 to 6 weeks.

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RETURN POLICY

10 Days Replacement Policy for Manufacturing defects. Info All products are covered by 10 Day Replacement Guarantee. This product is eligible for a free replacement, in case you receive a damaged, defective or different item. Please keep the product in its original condition with all accessories & packaging for a successful return. We may contact you to assess the damage or defect before issuing a replacement. Accessories like cables and eartips are not backed up the manufacturer's warranty.

Please note that physical damage cases need to be brought to our notice within 24 hours.

Simply Contact us through the chat window if you find any issues with your order.

WARRANTY

1 Year Manufacturer's Warranty

Description

The Binary EP321 MEMS sets a new benchmark in tribrid IEMs with its innovative 2DD + 3BA + 1MEMS driver array. Dual Dynamic Drivers (10mm primary + 6mm passive radiator) produce deep and textured sub-bass rumble. Three Balanced Armatures deliver transparent mids and natural vocals, and the world's first direct-drive MEMS driver achieves electrostatic-like treble extension to 40kHz with under 1% THD for shimmering airiness and micro-detail. This IEM reproduces a well-balanced and detailed presentation overall. It offers a W-shaped tuning with quality bass, forward mids and sparkling highs. The 1.2m 8-strand silver-plated copper modular cable ensures low microphonics and pure signal transfer, while 3D-printed resin shells with CNC stainless steel faceplates provide top-notch passive isolation. The shells feel lightweight and provide ergonomic fit for all day comfort. Strategic venting increases comfort by decreasing pressure buildup during workouts or casual home sessions. 

ADVANCE 6 DRIVER TRIBRID SETUP

Binary EP321 MEMS features an advance 2DD + 3BA + 1MEMS tribrid configuration. The 10mm & 6mm Dual Dynamic Drivers deliver deep sub-bass rumble and quality mid-bass thump. The 6mm unit is a passive diaphragm which assists the main 10mm driver in producing sensational bass response. The Three Balanced Armatures produce crystal-clear mids and lifelike high frequencies. At last, the world's first direct-drive MEMS driver extends the frequency response to 40kHz for ethereal treble. This setup delivers unmatched resolution, holographic imaging, and micro-dynamic finesse, making complex tracks reveal hidden layers for discerning audiophiles.

INNOVATIVE MEMS DRIVER REVOLUTION

The EP321 pioneers direct-drive MEMS technology, bypassing traditional voice coils for electrostatic-like treble and need for external energizer/amplifier. This solid-state driver offers lightning transients, blacker backgrounds, and shimmering airiness without sibilance. Paired with passive radiator synergy, it redefines high-frequency reproduction; cymbals sparkle & harmonics breathe. A game-changer for high-res audio and IEM world, surpassing BA limits in speed and extension while maintaining tonal coherence across the spectrum.

UNIVERSALLY COMPATIBLE SILVER PLATED CABLE

The package includes high-purity silver-plated copper cable with 0.78mm 2-pin connectors and non-swappable 3.5mm single-ended/4.4mm balanced terminations. The users can choose either of the two terminations according to their own setup. Multi-core braiding minimizes microphonics and tangles; silver plating enhances conductivity for vivid timbre and dynamics. Over-ear hooks ensure secure fit during movement, with durable PVC sheath for longevity. This cable elevates signal purity to match this IEM's technical prowess across various sources.

IRREGULAR GEOMETRIC FACEPLATES & RESIN SHELL

3D-printed medical-grade resin shells offer ergonomic fit and top-notch passive isolation. The resin shells are paired with premium CNC-machined stainless-steel faceplates in sleek irregular geometric design. Lightweight design and symmetrical venting controls resonance without pressure buildup. Robust 2-pin sockets can easily withstand multiple cable swaps. This IEM is the perfect combination of Artisanal design and durable build quality. It is perfect for daily use and seems visually striking, deserving a place in every audiophile’s collection.

ALL-DAY ERGONOMICS AND COMFORT

Ergonomic 3D-printed resin shells contour perfectly to ear anatomy; lightweight design helps it become unnoticeable after a while. Multiple acoustic vents equalize pressure, preventing driver flex or occlusion during extended sessions. The package also includes multiple eartip sizes for airtight seal and optimal isolation for every listener. Over-ear cable routing ensures stability during commuting, workouts or even studio use. The shells are sweat-resistant and remain fatigue-free even in stage-use.

BALANCED AND NATURAL TONALITY WITH RICH DETAILS

BINARY has tuned EP321 with a kind of W-shaped sound signature, which emphasizes deep sub-bass rumble, clear forward mids with natural vocals, and MEMS-driven treble sparkle for expansive soundstage. Balanced tonality avoids fatigue, textured lows don't bleed, mids retain timbre accuracy, highs shimmer with air. This pair specifically excels in soundstage, imaging, separation and macro-dynamics across genres ranging from Metal to Classical. Enjoy pure and reference-caliber sound with technical excitement aiding in critical listening.

Specifications

Brand Name
BINARY
Model Name
EP321 MEMS
Driver Configuration
2DD + 3BA + 1MEMS Tribrid
Impedance
13Ω
Sensitivity
122dB/Vrms
Frequency Response
8Hz–40kHz
THD
<1%
Cable
1.2m 8-strand silver-plated copper, modular 3.5mm/4.4mm
Connector
0.78mm 2-pin
Shell Material
3D-printed medical-grade resin with CNC stainless steel faceplates

Box Content

  • 1x IEM
  • 1x Cable
  • 9x Pairs of eartips (S/M/L)
  • 1x Carrying case
  • 1x Cleaning Tool
  • 1x User manual

Warranty

1 YEAR WARRANTY

Don't worry, BINARY EP321 MEMS comes with a 1 Year warranty against manufacturing defects. We guarantee that every product on Concept Kart is genuine and backed by the Manufacturer's warranty.

Read more about Concept Kart's warranty policy.

Shipping Policy

FREE SHIPPING ON ALL ORDERS

At Concept Kart, we offer FREE standard shipping on all orders across India. Orders placed before 2 PM are usually dispatched on the same working day, while orders placed after 2 PM are dispatched on the next working day (excluding Sundays and public holidays) from our Delhi warehouse.

Delivery usually takes 1–2 business days in Delhi, the next working day in metro cities, and 2–7 business days in other locations after dispatch. We use trusted courier partners, including BlueDart and Delhivery, and share tracking details via email or WhatsApp. For prepaid orders, OTP verification is required at delivery for added security. Share the OTP only after receiving your package.

COD is available for orders between ₹1,500 and ₹10,000, with cash handling charges of ₹50 (up to 1 kg) and ₹100 (above 1 kg), displayed at checkout.

Delivery may be delayed due to festivals, extreme weather, floods, protests, or courier disruptions. Pre-orders follow the estimated timelines mentioned on their product pages.

For shipping or delivery assistance, contact customercare@conceptkart.com with your order number.