xMEMS Unveils Lassen: A Revolution in Silicon MEMS Tweeters

xMEMS has introduced Lassen, the world’s first silicon MEMS tweeter that operates without an external amplifier, marking a significant advancement in wireless earbud technology. This innovative driver delivers exceptional high-frequency performance, achieving up to 115 dB SPL within the 6 kHz to 20 kHz range from a standard 1 Vrms audio output. The amplifier-less design simplifies the internal architecture of earbuds, eliminating the need for separate piezo amplifier chips that traditionally occupy valuable space and consume additional power.

Measuring a compact 3.2 x 5 x 1.15 mm, the Lassen tweeter is engineered for minimal power consumption, operating on mere microwatts of electrical energy. This efficiency not only enhances battery life but also contributes to slimmer and more lightweight earbud designs. The high-fidelity sound reproduction surpasses that of conventional high-frequency drivers, offering superior clarity and detail that audiophiles will appreciate.

The integration of xMEMS Lassen technology is set to reduce manufacturing costs by approximately 25%, making high-quality wireless earbuds more accessible to consumers. By removing the amplifier requirement, manufacturers can streamline production processes and allocate resources more effectively, paving the way for the development of more affordable and compact audio solutions without compromising on sound quality.

Mass production of the Lassen tweeter is scheduled to begin in September 2025, with expectations that it will be incorporated into a wide range of upcoming wireless earbud models. This breakthrough technology is poised to set new standards in the audio industry, enabling manufacturers to offer products that deliver realistic and immersive sound experiences while maintaining cost-efficiency and design flexibility.

With Lassen, xMEMS demonstrates a commitment to pushing the boundaries of audio technology, providing a sustainable and high-performance solution for the future of wireless listening. As the demand for premium sound quality continues to grow, this amplifier-less tweeter stands out as a pivotal development in meeting the evolving needs of audio enthusiasts and the broader market.