ROSESELSA x AAV CJ20 in-ear monitors with black metal housing and braided cables
All-metal body of ROSESELSA CJ20 in-ear monitors with gold accents and dual 3.5mm and 4.4mm modular plugs
Close-up of graphene-plated OCC copper cable for ROSESELSA CJ20 in-ear monitors with high conductivity design
Exploded view of ROSESELSA CJ20 in-ear monitor showing internal components and all-metal construction
Exploded view of ROSESELSA x AAV CJ20 planar magnetic in-ear monitor components
Lab-measured tuning graph for in-ear monitors with wide and narrow bore sound profiles
In-ear monitors with built-in stable design for consistent performance
High-quality in-ear monitors with interchangeable ear tips for comfort and sound customization
In-ear monitors compatible with various devices featuring interchangeable plug options
Audio cables with interchangeable plugs for versatile device compatibility
In-ear monitors with braided cables for rock and metal music
Close-up of 14.2mm planar magnetic driver in high-fidelity audio device

ROSESELSA

ROSESELSA x AAV CJ20 14.2mm Planar Magnetic Driver In-Ear Monitor

Sale price₹ 15,999Regular price ₹ 25,599

    14.2mm Planar Magnetic Driver for High-Resolution Audio Performance

    Expertly Tuned with AAV for Enhanced Rock and Metal Sound Signature

    Durable All-Metal Construction for Long-Lasting Stability

    Interchangeable 3.5mm / 4.4mm Modular Plug for Flexible Connectivity

    Premium Graphene-Plated OCC Single Crystal Copper Cable

    Includes Wide & Narrow Bore Eartips for Customized Fit and Comfort

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Description

The ROSESELSA CJ20 is a newly developed in-ear monitor featuring a large 14.2mm planar magnetic driver on each side. It has been co-tuned in collaboration with Andy from Andy Audio Vault, known for the popular “Dongle Madness” review series.

Designed especially for Metal and Rock music, the CJ20 includes two types of ear tips—wide bore and narrow bore—allowing you to tailor the sound to your preferred genre.

With its powerful planar driver, the CJ20 delivers detailed, high-resolution audio with excellent clarity and ultra-fast transient response, offering an immersive and dynamic listening experience.

 

14.2MM PLANAR MAGNETIC DRIVER WITH HIGH-RESOLUTION DETAIL

ROSESELSA CJ20 IEM is a pair of 14.2mm Planar Magnetic IEMs designed for fast transient response, low distortion, and exceptional clarity. These HiFi Earphones and In-Ear Monitors use a planar architecture to deliver tight bass, smooth mids, and clean treble, making them ideal Audiophile Gear for detailed listening and for IEMs for Rock and Metal music.

CO-TUNED WITH AAV FOR REFINED ROCK TUNING

Andy from Andy Audio Vault is a well-known figure in the HiFi audio community, with years of experience reviewing audio gear and deep expertise in critical listening. His extensive input helped fine-tune the ROSESELSA CJ20 to deliver an exceptional experience for Rock and Metal listeners, making it a standout IEM built by a true metal enthusiast for audio lovers.

ALL-METAL BODY FOR DURABILITY AND STABILITY

The all-metal construction HiFi earphones design adds strength, premium feel, and long-term durability while helping suppress unwanted resonances. These high-resolution planar magnetic monitors deliver a darker background, cleaner detail retrieval, and a more refined overall audio experience.

MODULAR 3.5MM / 4.4MM PLUG DESIGN FOR VERSATILE USE

The included quick-swap modular cable system supports both 3.5mm and 4.4mm connectors, giving these Wired Earbuds broad compatibility with phones, DACs, digital audio players, and amplifiers. This modular termination plug system makes it easy to switch between standard and balanced output setups for flexible everyday use.

GRAPHENE PLATED OCC SINGLE-CRYSTAL COPPER CABLE

ROSESELSA CJ20 In-Ear Monitor comes with a Graphene plated OCC single crystal copper cable engineered for stable signal transmission and strong conductivity. This high-purity cable helps preserve detail, improve responsiveness, and support a clean, high-fidelity listening chain for premium planar performance.

WIDE BORE AND NARROW BORE EARTIP TUNING WITH LIGHTWEIGHT COMFORT

ROSESELSA CJ20 In-Ear Monitor includes both wide bore and narrow bore silicone eartips, allowing users to fine-tune the sound to their preference. These planar IEMs feature ergonomic all-metal ear shells 5.4g, making them comfortable for long listening sessions, while the fit and tuning make them a practical choice among affordable high-performance planar IEMs for daily commuting, studio use, or relaxed home listening.

Specifications

Brand Name
ROSESELSA
Model Name
CJ20
Product Name
ROSESELSA CJ20 IEM
Driver Unit
14.2mm Planar Magnetic Driver
Impedance
240±10% @1kHz 155mV
Sensitivity
102±3dB/Vrms @1kHz
THD
<3% @1kHz @1.0mW
Frequency Response Range
20Hz - 20kHz
Cable Material
Graphene Plated OCC Single Crystal Copper
Cable Length
1.2m
Interface Type
3.5mm / 4.4mm Modular
Connector Type
0.78mm 2-Pin
Single Earbud Weight
5.4g

Box Content

What Will You Get

  • 1× ROSESELSA CJ20
  • 8× Pairs of Eartips
  • 1× OCC Copper Cable
  • 1× Modular Plugs (3.5mm & 4.4mm)
  • 1× Storage Case
  • 1× Manual

Warranty

1 YEAR WARRANTY

Don't worry, ROSESELSA x AAV CJ20 14.2mm Planar Magnetic Driver In-Ear Monitor 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 PREPAID ORDERS

We usually ship orders on same day if ordered before 2 pm or within 24 hours if ordered later (except on holidays/sunday, where processing times may be higher) from one of our domestic warehouses based out of Delhi. It normally takes around 1 to 5 business days for delivery. We use premium service partners such as Blue dart, DTDC and Delivery for faster and reliable service. A tracking number will be provided upon shipment.

In very rare cases when order is not received after 10 business days of shipment (extended by number of days when the govt. Restricts movement of goods due to factors such as coronavirus pandemic), please contact us and we will provide you a support.