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xMEMS unveils amplifier-less tweeter for wireless earbuds
Published onMarch 27, 2025
- Today, xMEMS announced Lassen, the world’s first “amplifier-less” silicon MEMS tweeter.
- Lassen reduces wireless earbud cost, component area, and power consumption.
- Mass production is scheduled for September 2025.
Based on our testing data, we’ve found that xMEMS earbuds such as the Creative Aurvana Ace Mimi and SoundPEATS Capsule 3 Pro+ deliver some of the best sound quality of any wireless earbuds on the market. With today’s announcement, that technology looks to have become even cheaper and more power efficient, paving the way for more affordable wireless earbuds in the future.
The new xMEMS Lassen technology brings an “amplifier-less” design to its silicon MEMS tweeter for wireless earbuds. Without the need for additional amplification, xMEMS Lassen is capable of up to 115dB SPL in the 6-20 kHz frequency range from a standard 1Vrms audio output. At a tiny size of 3.2 x 5 x 1.15 mm and consuming mere microwatts of power, xMEMS Lassen has the potential to deliver excellent treble clarity with minimal drawbacks.
Previous xMEMS dual drivers required a separate piezo amplifier chip, taking up precious space and power within a compact wireless earbud design. This new solution opens the door for the same excellent treble clarity while saving room and power. xMEMS says that removing the amplifier requirement reduces the cost of tweeter integration roughly 25%.
You might see this technology on wireless earbuds as soon as the end of this year, as xMEMS says mass production is scheduled for September 2025.