PulseAir MEMS
Speakers

The World's First 1mm-Thin
Full-Range MEMS Speaker

Ideal for Intelligent Eyewear, Open
Earbuds and Compact AI Wearables

Experience a New Era Of Sound

PulseAir brings premium, full- range audio to the next generation of wearables with an ultra-thin 1mm solid-state speaker designed for immersive open-air listening. 

Delivering rich bass, natural mids, crisp highs, and industry-leading transient response, PulseAir creates a more detailed and responsive listening experience than traditional micro-speaker technologies. Its all-silicon construction provides exceptional reliability while enabling product designers to build smaller, lighter, and more comfortable devices without sacrificing audio performance. 

From AI glasses and smart eyewear to emerging wearable platforms, PulseAir establishes a new benchmark for high-performance, open-air audio in space-constrained designs.

Explore Our PulseAir Product Portfolio

PulseAir is the world’s first all-silicon MEMS speaker engineered specifically for near-field open-air listening. Built on xMEMS’ patented Sound from Ultrasound™ platform and powered by µFidelity™ technology, PulseAir redefines what’s possible in compact AI smart wearables. 

XMA-9320

Full-range Loudspeaker for Open/On Ear

The XMA-9320 is the world’s first all-silicon, full-range MEMS speaker engineered for Open/On Ear listening. At just 1mm thin, it enables slimmer, lighter wearable designs while delivering immersive audio performance, exceptional clarity, and the reliability of a semiconductor architecture. 

  • Package dimensions: 8.41W x 9.0L x 1.13H mm
  • Smaller speaker back volume required for reduced mechanical space
  • No phase delay
  • Superior audio performance
  • Improved low frequency response (1st order decay) vs. dynamic drivers – (1/f vs. 1/f² or -20dB vs. -40dB from 2KHz to 20 Hz)
  • Open wireless stereo (OWS) earbuds
  • Smart watches
  • Smart glasses
  • XR headsets
  • Smartphones
  • Laptops

XMA-9321

High-output Near-Field Loudspeaker for intelligent eyewear and audio glases

The XMA-9321 is a high SPL output MEMS loudspeaker purpose-built for intelligent eyewear and audio glasses, delivering high fidelity sound and clarity in a compact, lightweight package. Its solid-state silicon architecture delivers greater durability, design flexibility, and spatial accuracy, enabling immersive audio experiences as smart eyewear emerges as a primary interface for AI interactions. 

  • Package dimensions: 4.0W x 20.0L x 1.28H mm
  • Reduces package volume by 70%, freeing up critical space inside the watch cavity
  • No phase delay
  • Superior audio performance
  • Improved low frequency response (1st order decay) vs. dynamic drivers – (1/f vs. 1/f² or -20dB vs. -40dB from 2KHz to 20 Hz)
  • Smart watches
  • Fitness bands

XMA-9210

Full Range Speaker for In-Ear

 

The XMA-9210 is the world’s first full-range, solid-state MEMS speaker for In-Ear applications. XMA-9210 (formerly Cypress) generates sound through ultrasound modulation-demodulation. It provides a no-compromise replacement for coil and magnet speakers in 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

True wireless Stereo (TWS) Earbuds

Features & Benefits 

How µFidelity Technology Works

01 Piezoelectric Actuation

Thin-film piezoelectric material deposited on silicon expands and contracts at ultrasonic frequencies, converting electrical energy into mechanical motion.

02 Air Pulse Generation

Actuators vibrate above human hearing range, creating continuous high-velocity air pulses through precision micro-valve arrays on the chip.

03 Digital Sound Reconstruction

Novel sound generation through demodulated ultrasonic air pulses. 

04 Sound Propogation

Full range output through acoustic vent slots with minimum back volume required. 

For Sleeker, Fashion- Forward Products that Consumers Will Love

xMEMS’ PulseAir Speakers enable consumer electronics to achieve thinner, more stylish form factors while maintaining big, rich sound.

Here’s How You Can Experience XMC-2400

Upcoming Events

Westin Nanshan – Shenzhen

Illume Taipei – Taipei

Applications

  • Smartphones
  • Tablets
  • External solid-state drives (SSDs)
  • Xr goggles
  • Laptops
  • In-chip integration to 2d/3d-stacks

Frequently Asked Questions (FAQs)

Why PulseAir is different?

PulseAir is the world’s first all-silicon MEMS speaker engineered specifically for near-field open-air listening. Built on xMEMS’ patented piezoMEMS silicon platform, PulseAir delivers full-range audio with rich bass, crisp highs, and industry-leading transient response, all in an ultra-thin 1 mm form factor.

Unlike conventional micro speakers, PulseAir combines high-fidelity sound, low distortion, and a compact silicon architecture, enabling premium open-air audio experiences for next-generation wearable devices, AI glasses, and other space-constrained consumer electronics.

A MEMS speaker is a micro-electromechanical loudspeaker manufactured using semiconductor processes instead of conventional voice-coil technology. MEMS speakers enable smaller, thinner and more reliable audio systems for next-generation wearables, smart glasses, earbuds and XR devices.

MEMS speakers reduce size, weight, and power requirements while enabling slimmer industrial designs. PulseAir’s 1mm-thin profile and full-range audio performance make it ideal for smart glasses, XR headsets and open-ear wearable devices.