Earth Mountain

The EM web site continues to be updated with new information.
While this C&P is not new it does highlight the exceptional functionality of the AKP MEMS chip.
Digital MEMS Speaker

Breakthrough innovations in sound reconstruction, use MEMS array  to reproduce sound.
Efficiency > 30%  
High sound pressure level, compatible with wider range of application Size：9.8 x 9.8 x1 mm Frequency range：20 Hz-20K Hz THD：0.01%, Better than -80dB Market: Replace the traditional speaker Market Cost: low.
Seems little doubt EM specialists have both listened to, tested and measured the outputs from the AKP MEMS device.

For any AKP shareholder who has not checked recently the EM site is certainly worth a few minutes of your time time to review . Looking at the expertise EM have built up gives credence to the view that AKP continues to develop and improve the MEMS.
http://www.emems.com.cn/col.jsp?id=104

Now we are anxiously awaiting the opportunity to listen to this new technology sound reproduction device.