µFidelity™
Solid-State µSpeakers

Micro speakers for personal audio

Explore Our Solid-State µSpeakers

Our MEMS microspeaker technology produces the world’s fastest and most precise micro speakers delivering superior audio clarity and fidelity.

Muir (New!)

MEMS Tweeter Speaker

Muir is the world’s smallest all-silicon MEMS tweeter for Hi-Res headphones, IEMs, TWS earbuds, and gaming headsets, delivering extended high-frequency performance, enhanced clarity, and premium solid-state fidelity for next-generation 2-way audio designs. With a 17% smaller footprint than Cowell and improved audio performance, Muir enables the next generation of compact premium audio devices.

  • Package dimensions: 3.2W x 5.0L x 1.15H mm
  • Superior high-frequency response & clarity
  • High-performance tweeter for non-occluded or multi-driver earphone implementations
  • True Wireless Stereo (TWS) Earbuds
  • 2-Way Headphones
  • Hearing Health
  • Smart Glasses (tweeter only)

Lassen

MEMS Tweeter Speaker

Lassen is xMEMS’ amplifier-free MEMS tweeter, delivering exceptional high-frequency performance for 2-way TWS earbuds. Eliminate the need for a dedicated piezo amplifier with Lassen, reducing cost, saving space, and extending battery life (similar to Muir).

  • Package dimensions: 3.2W x 5 L x 1.15 H (mm)
  • Eliminates the separate amplifier requirement
  • Superior high-frequency response & clarity
  • High-performance tweeter for 2-way TWS applications
  • True Wireless Stereo (TWS) Earbuds

Cowell

MEMS Tweeter Speaker

Cowell is an all-silicon MEMS tweeter for premium earbuds, hearing aids, and headphones. Delivering near-zero latency and exceptional transient response, Cowell reproduces harmonics, textures, and microdetails with remarkable precision for a true solid-state listening experience.

  • Package dimensions: 3.2Wx 6.0L x 1.15H mm
  • Superior high-frequency response & clarity
  • Can function as a full-range speaker (20Hz to 20kHz) for fully occluded systems or as a high-performance tweeter in 2-way speaker modules.
  • 2-way True Wireless Stereo (TWS) Earbuds (tweeter only)
  • 2-way Headphones (tweeter only)
  • Wireless/Wired In-Ear Monitors (IEM)
  • Smart Glasses (tweeter only)
  • Hearing Aids

Montara Plus

Full Range MEMS Microspeaker 

Montara Plus is the world’s highest sensitivity MEMS speaker, delivering audiophile-grade, full-range IEM architecture. Experience exceptional clarity, accuracy, and fidelity without the complexity, tuning challenges, or phase distortion of multi-driver designs. Powered by xMEMS Aptos2 amplifier.

  • Package dimensions: 5.15Wx 10.8L x 1.15H mm
  • Lightning-fast transient response
  • Can function as full range speaker (20Hz to >40kHz) for TWS and wired earphones and as midrange-tweeter applications such as smart glasses and virtual reality.
  • Wireless/Wired In-Ear Monitors (IEM)
  • Wired Earphones
  • Hearing Aids
  • Smart Glasses (tweeter only)

Solid-State µFidelity™ MEMS Microspeaker Technology 

Superior audio clarity and fidelity for personal audio devices 

Features & Benefits 

xMEMS hi-res, solid-state MEMS micro speakers offer pioneering capabilities not possible with traditional voice coil speakers. 

Superior Clarity, Detail & Fidelity   

Silicon diaphragm for reduced speaker breakup

World’s Fastest Transient Response 

1° Spatial Accuracy & Separation 

By leveraging the precision and scalability of modern silicon fabrication, our MEMS speakers offer several manufacturing benefits. 

Solid-State Uniformity & Consistency

10,000g Shock Resistance 

All-silicon, SMT reflowable 

Water/Dust Resistant

Explore Our MEMS Micro Speakers 

Our MEMS microspeaker technology produces the world’s fastest and most precise micro speakers delivering superior audio clarity and fidelity.

Muir

MEMS Tweeter Speaker

As the world’s smallest, all-silicon MEMS tweeter for TWS earbuds and headphones, Muir delivers extended high-frequency response with next-level clarity and fidelity for 2-way woofer/tweeter designs.

  • Package dimensions: 3.2W x 5.0L x 1.15H mm
  • Superior high-frequency response & clarity
  • High-performance tweeter for non-occluded or multi-driver earphone implementations
  • True Wireless Stereo (TWS) Earbuds
  • 2-Way Headphones
  • Hearing Health
  • Smart Glasses (tweeter only)

Cowell

Full Range MEMS Microspeaker

As the world’s smallest full-range, all-silicon MEMS speaker for Earbuds and hearing aids, Cowell delivers bass response down to 20Hz and superior high-frequency fidelity and clarity.

  • Package dimensions: 3.2Wx 6.0L x 1.15H mm
  • Superior high-frequency response & clarity
  • Can function as a full-range speaker (20Hz to 20kHz) for fully occluded systems or as a high-performance tweeter in 2-way speaker modules.
  • 2-way True Wireless Stereo (TWS) Earbuds (tweeter only)
  • 2-way Headphones (tweeter only)
  • Wireless/Wired In-Ear Monitors (IEM)
  • Smart Glasses (tweeter only)
  • Hearing Aids

Montara Plus

Full Range MEMS Microspeaker 

As the world’s highest sensitivity MEMS speaker for audiophile-level full-range IEMs, Montara Plus delivers the highest fidelity and clarity in a simplified, single speaker IEM, eliminating complexity, phase disturbances and bulk of multi-transducer monitors. 

  • Package dimensions: 5.15Wx 10.8L x 1.15H mm
  • Lightning-fast transient response
  • Can function as full range speaker (20Hz to >40kHz) for TWS and wired earphones and as midrange-tweeter applications such as smart glasses and virtual reality.
  • Wireless/Wired In-Ear Monitors (IEM)
  • Wired Earphones
  • Hearing Aids
  • Smart Glasses (tweeter only)

Cypress

Full Range MEMS Speaker with “Sound from Ultrasound” 

Sound from Ultrasound Icon_Final_Oct 2

As the world’s first full-range, solid-state MEMS speaker for ANC earbuds, Cypress generates sound through ultrasound modulation-demodulation. It provides a no-compromise replacement for coil & magnet speakers in ANC earbuds. 

  • Package dimensions: 6.5W x 6.3 L x 1.65 H (mm)
  • Shifting to a “Sound from Ultrasound” principle, Cypress achieves >140dB low-frequency sound pressure level (SPL)
  • A no-compromise replacement for coil and magnet speakers in ANC earbuds
  • Extended ANC bandwidth with enhanced speed and phase consistency
  • No in-band mechanical movement for low distortion
  • True Wireless Stereo (TWS) Earbuds

To access more resources about our products, we need to verify your email address and company. Please visit xMEMS Portal tab to request access and initiate the verification process. 

To access more resources about our products, we need to verify your email address and company. Please visit xMEMS Portal tab to request access and initiate the verification process.