1. AAC Technologies Holdings Inc.
2. Akai Electric Company Ltd
3. Audio-Technica Corporation
4. Broadcom Corporation
5. Cirrus Logic Inc.
6. CUI Devices
7. Georg Neumann GmbH
8. Goertek Inc.
9. Guangdong Takstar Electronic Co. Ltd.
10. Harman International Industries
Incorporated
11. Hosiden Corporation
12. Infineon Technologies AG
13. LEWITT GmbH
14. Logitech International S.A.
15. Music Tribe Commercial MY Sdn. Bhd.
16. Sansui Electric Co. Ltd.
17. Schoeps GmbH
18. Sennheiser electronic GmbH & Co. KG
19. Shure Corporation
20. Silicon Laboratories Inc.
21. Sonion A/S
22. Sony Taiyo Corporation
23. TDK Corporation
24. Texas Instruments Incorporated
25. Zilltek Technology Corp.