Hiby
HiBy x Faudio Project Ace In-Ear Monitor
Best high-fidelity in-ear monitor for discerning audiophiles seeking balanced, immersive sound.
Experience audio artistry with the HiBy x FAudio Project Ace, a unique in-ear monitor designed for immersive listening. Its distinctive pentagon shape symbolizes five core audio elements, delivering a balanced and musical sound. Featuring a custom 12mm dynamic driver with a beryllium-plated diaphragm and a lightweight magnesium-lithium alloy dome, it offers exceptional responsiveness and clarity. The premium 8-core cable ensures pure audio transmission, while the ergonomic CNC-carved shell provides lasting comfort. This versatile IEM is ready for any high-end audio setup with included 3.5mm and 4.4mm adapters.
$299.99
Owner Satisfaction
4.6
/ 5
Category Rank
454
/ 6144
#454 in Headphones
Price vs Category Average
-49%
Below average
Type
In-Ear Monitor IEM Earphone
/ In-Ear Monitor IEM Earphone
Who it's for
- Commuters needing durable gear for all-day listening comfort
- Audiophiles seeking a balanced and detailed musical experience
- Budget-conscious listeners wanting high-end sound performance
Who should skip it
- Purists sensitive to driver integration and sonic cohesion
- Users expecting premium accessories out of the box
- Listeners without access to dedicated amplification hardware
Performance breakdown
Transient Response
Magnesium-lithium alloy dome delivers lightning-fast, precise musical transients.
Build Integrity
CNC-carved shell offers a premium, durable feel for daily wear.
Sonic Balance
Pentagon design architecture ensures a cohesive and musical frequency presentation.
Driver Efficiency
High sensitivity makes these monitors easy to drive with portable sources.
Ergonomic Comfort
Sculpted housing shape provides a secure, fatigue-free fit for long sessions.
Connectivity Versatility
Included modular adapters ensure seamless compatibility with diverse audio setups.
Key Specs
Type
In-Ear Monitor IEM Earphone
Driver
12mm dynamic, Mg & Li alloy dome, Be-plated diaphragm
Frequency Response
20Hz – 20kHz
Impedance
32Ω
Sensitivity
115dB @ 1kHz
Max Input Power
100mW
Total Harmonic Distortion
<1%
Cable Connector
0.78mm CM 2-pin detachable
Features
- Unique pentagon design for balanced audio integration.
- Custom 12mm dynamic driver for clear highs.
- Lightweight Mg-Li alloy dome for fast response.
- Premium 8-core copper & silver hybrid cable.
- Ergonomic CNC-carved housing for comfort.
- Includes 3.5mm and 4.4mm adapters.
- Collaborative design by HiBy and FAudio.
What customers say
This model excels in both sound quality and comfort. Listeners consistently highlight the technically proficient tuning, noting the impressive soundstage and clear instrument separation. The bass is dynamic with satisfying depth, while vocals remain natural and articulate. Furthermore, the ergonomic design provides a secure and comfortable fit for extended use. Enthusiasts agree this unit delivers outstanding value, offering performance that rivals significantly more expensive flagship models for a truly engaging audio experience.
Know before you buy
The beryllium plating adds significant rigidity to the 12mm driver, which helps reduce distortion and improves the speed of the sound. This results in cleaner, more precise highs and a more responsive overall audio performance.
Yes. The Project Ace includes both 3.5mm and 4.4mm adapters, allowing you to connect to standard single-ended jacks as well as balanced outputs on high-end digital audio players or DACs.
Yes, the IEMs use a standard 0.78mm 2-pin connector. This makes it easy to swap the included 8-core hybrid cable for a custom cable if you prefer a different material or need a specific termination.
Despite the unique pentagon shape, the housing is CNC-carved with ergonomics in mind to ensure it sits securely in the ear. The lightweight construction helps prevent ear fatigue, making them suitable for extended daily listening.
No, the Project Ace relies on passive noise isolation. By achieving a proper seal with the correct ear tips, the physical design of the shell effectively blocks out a significant amount of ambient background noise.
With an impedance of 32Ω and a sensitivity of 115dB, these are relatively efficient and can be driven by most smartphones. However, using a dedicated DAC or high-quality audio player will help you get the most out of the driver's resolution and clarity.
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