In-ear metal headphones with HIFI double moving coil technology, featuring dual horn design for heavy bass response, 9.2mm NdFeB speaker, noise-isolating fit, and smart wire control with built-in microphone for mobile phone and computer use
Metal In-Ear Headphones with HIFI Double Moving Coil Sound and Heavy Bass for Mobile Phones

Experience audio clarity with these piston in-ear headphones, which utilise a metal CNC zinc alloy construction and HIFI double moving coil technology. Designed for listeners seeking a detailed sound profile with an emphasis on low-end response, the dual horn architecture works to produce pronounced bass. The 9.2mm NdFeB speaker delivers a wide frequency range from 20Hz to 22KHz, capturing both deep notes and high-frequency details. Integrated smart wire controls offer direct command over music playback and phone calls via a built-in microphone, making them a practical choice for everyday mobile use. Their noise-isolating in-ear design helps minimise external distractions, while the standard 3.5mm AUX jack ensures broad compatibility with smartphones, computers, and portable media players.
Features and Construction

The headphones are built with a focus on durable materials and audio engineering to provide a consistent listening experience. Key elements include the metal housing and a speaker system designed for both power and range.
Material and Build
The primary construction uses metal CNC zinc alloy, contributing to the product's overall 15g weight and offering a solid, metallic feel. This material choice provides the structural foundation for the internal audio components, including the double moving coil assembly and the dual horn design. The build focuses on housing the 9.2mm NdFeB speaker, which has a rated input power of 3mW and a maximum input power of 5mW. The technical design aims to support the HIFI sound reproduction goal and the targeted heavy bass output.
Size and Practical Fit
Weighing 15g, the headphones are designed for portability and extended wear. The piston-style in-ear design is intended to create a noise-isolating seal within the ear canal, which can help reduce ambient noise during use. This fit is central to achieving the claimed audio performance, particularly for bass response. The provided specifications include an impedance of 32Ω±15% and a sensitivity of 99±3dB at 1KHz 1mW, figures which relate to how the headphones interact with various audio sources. The operating temperature range is specified from -10°C to +40°C.
Uses and Placement

These headphones are engineered for personal audio listening across multiple devices and scenarios, from mobile communication to dedicated music playback.
Event or Professional Use
The combination of HIFI sound, heavy bass focus, and noise isolation makes them suitable for immersive music listening, gaming, or video consumption where audio detail is valued. The built-in microphone and call control functions allow for clear voice communication during phone or video calls, supporting remote work or communication needs. Their broad frequency response may cater to users who require audio monitoring across a wide spectrum.
Everyday Home Use
For daily activities, the smart wire control offers convenient management of music playback—play, pause, and track switching—without needing to access the connected device. The 3.5mm AUX interface provides compatibility with a wide range of common household electronics, including smartphones, laptop computers, tablets, MP3 players, and MP4 players. The noise-isolating property can be beneficial in moderately noisy home environments, helping to focus on the audio content.
Benefits and Buying Value

The value proposition centres on the integration of specific audio hardware within a metal build, offering a feature set aimed at both sound quality and everyday functionality.
Reuse and Low Maintenance
The metal construction suggests a degree of robustness for regular handling. The lack of complex electronic parts beyond the speaker, wiring, and microphone points towards straightforward use. Care involves keeping the earpieces and 3.5mm connector clean and storing the headphones within the specified temperature limits to maintain performance.
Why Choose This Product
These headphones present a specific combination of a metal housing, a 9.2mm NdFeB speaker system with double moving coil technology, and a design goal centred on HIFI sound with heavy bass. The inclusion of inline controls and a microphone adds practical utility for mobile phone users. For buyers prioritising these concrete specifications—metal build, defined speaker size and type, bass-focused audio, and wired control functions—this product offers a matched feature set without requiring wireless connectivity or rechargeable batteries.
