Juzear proudly presents the Harrier, the world’s first in-ear monitor (IEM) “tuned with Squiglink” — a pioneering approach that combines passion, precision, and expertise to deliver a refined listening experience.
You can find the Harrier at HiFiGo: https://hifigo.com/products/juzear-harrier?variant=47007179014383
What is Squiglink?
Squiglink is a comprehensive platform for headphone and IEM frequency response (FR) measurements. Created by audio reviewer Mark Ryan Sallee (Super* Review), Squiglink has become a central hub for enthusiasts and professional reviewers to share and compare objective audio data. With thousands of measurements from around the world, Squiglink data is used by over 50,000 audio enthusiasts and professionals each month to understand how IEMs and headphones perform, making it an essential resource for anyone serious about sound.
What Does “Tuned with Squiglink” Mean?
“Tuned with Squiglink” is a program developed by Mark Ryan Sallee to help IEM manufacturers create products that sound their best while avoiding common tuning pitfalls. Drawing on over eight years of experience reviewing and measuring more than 500 IEMs, Mark combines careful listening, prototype measurements, expert feedback, and parametric EQ (PEQ) guidance to refine each IEM’s sound. This program isn’t about hitting a specific FR target curve — it’s about tuning IEMs to sound their best for the target customer.
About Mark Ryan Sallee (Super* Review)
Mark Ryan has more than eight years of experience reviewing and measuring more than 500 IEMs. He knows what makes an IEM stand out and what often limits its performance. Through “Tuned with Squiglink,” he works with manufacturers before a product launch, providing listening feedback, prototype measurements, and tuning advice to help each IEM reach its full sonic potential.
The Result: The Juzear Harrier
The Harrier is more than just another IEM. With “Tuned with Squiglink,” it delivers a sound signature that is precise, balanced, and natural.
The Harrier project started with a simple goal: Deliver a balanced tuning that will appeal to a wide audience with a budget of around $330. An analysis of Squiglink usage patterns reveals two strong trends in tuning preference at this price bracket: DF neutral + bass boost, and IEF neutral + bass boost. And looking specifically at purchase intent analytics, an advantage emerges for IEF neutral + bass boost. With that direction in mind, we iterated on the tuning of Harrier, making adjustments based on Squiglink measurements and listening feedback, to ensure a smooth treble response on top of a proven popular tuning preference.
It offers a listening experience grounded in both scientific measurement and expert evaluation, setting a new standard for in-ear audio performance.
Features:-
>Tuned with Squiglink.
>High-Performance Tribrid Driver Configuration.
>1DD+6BA+2 Micro Planar Drivers.
>4th-Generation Composite Carbon-based Coated Diaphragm Dynamic Driver.
>Custom-Developed Mid-Frequency Balanced Armature Drivers.
>Knowles High-Frequency Balanced Armature Drivers.
>Composite Micro-Planar Magnetic Drivers.
>Four-way Acoustic Crossover with Independent Duct Tubes.
>Integrated Front-Chamber Nozzle Design.
>Design Inspired by Harrier Hawk, A Symbol of Courage.
>DLC 3D-Printed Ear Shells.
>Exquisite CNC-Carved Hawk-Eye Stone Face Covers.
>Tuning Refined Following the IEF Neutral+Bass Boost Curve.
>Natural, Perfectly Balanced, Spacious Sound Presentation.
>Specially Designed Air Pressure Balancing System with Precise Micro Vent System.
>Customized Fit with Four Types of Ear Tips.
Technical Information:-
>Impedance: 32Ω.
>Sensitivity: 112±1dB SPL/mW.
>Frequency Response Range: 20Hz~20kHz.
>THD+N: ≤0.8%.
>Cable Type: 6N SPOCC+SCCW Hybrid Cable.
>Connector Type: 2-Pin(0.78mm).
>Termination Plugs: 3.5mm+4.4mm(Swappable Plug System).
Audiophiles rejoice, the much-anticipated project of 2025 is finally live, introducing the Juzear x Squiglink Harrier. Crafted with great precision, this outstanding pair of in-ear monitors packs a solid nine-driver setup on each side, housing a 4th-generation dynamic driver unit, six high-performance balanced armature drivers, and dual composite micro planar drivers. These drivers are arranged together in a highly precise four-way frequency crossover with four independent acoustic tubes. JUZEAR has Tuned the Harrier with Squiglink, achieving a refined frequency response based on the IEF Neutral + Bass boosted sound curves. The pair delivers a rich and smooth sound profile with a natural tonality across the frequency band. In terms of design and build, the Juzear Harrier carries spectacular looks with CNC-carved hawk-eye stone for the face covers and 3D DLP printed resin material shells.
Agile, Fearless, and Courageous:-
Juzear Harrier is named after the Harrier Hawk, a symbol of courage, focus, and fearlessness. The main inspiration is implemented in the face plates that echo the story of Hawk-Eye with its CNC-carved Hawk-Eye stone. The pair carries exciting looks, premium sound, and a supremely comfortable design. The pair features genuine Blue Tiger’s eyes on the faceplate. Each unit has a flawless finish with a unique and beautiful texture!!
Equipped To Perform:-
Juzear Harrier IEMs are designed to bring a true high-fidelity sound experience to its users. The pair utilizes a nine-driver tribrid configuration housing 1DD, 6BA, and 2 Micro Planar drivers on each side. Each driver here is carefully chosen and precisely adjusted to deliver a remarkable sound response. Harrier utilizes a customized dynamic driver with a carbon-based diaphragm, four customized balanced armature drivers for midrange, two Knowles balanced armature drivers for high-frequencies, and two composite micro-planers for the high-frequency region.
Four-Way Crossover with Independent Acoustic Tubes:-
In order to get the best out of each driver and their careful tuning, Juzear has implemented a four-way frequency crossover on the Harrier. Each driver setup is managed through precision ports with four independent acoustic tubes. The pair maintains balanced response between he drivers, ultra-low distortion in the output, and promises a wide soundscape with precise imaging. Each path is carefully designed for smooth sound signal flow and control, enhancing the overall sound quality of the Harrier.
Tuned with Squiglink:-
Juzear Harrier is not just another IEM in the market; it is developed through the “Tuned with Squiglink” program to achieve a precise, balanced, and natural sound response. The pair is professionally tuned by Squiglink data and listener feedback, it is refined around the IEF neutral+bass boosted sound curve. The pair delivers a smooth sound profile with exquisite bass, intricate details, and charming vocal presence. It is tuned to complement different genres of music together.
Exquisite Craftsmanship:-
Juzear showcases outstanding craftsmanship with its products. The Harrier is no different here. For supreme comfort, we have ergonomic, lightweight ear shells crafted using a high-precision 3D DLP process. The pair features exquisitely designed face covers crafted using CNC-carving on genuine Blue Tiger’s eyes. Each panel has its own natural shimmer and texture. Additionally, the face covers have nickel metal accents that further enhance the look and provide a refined finish to the set.
