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Road Map

2003 - Development of the Bass driver - How to develop the vibrator in the driver. 

2005 - Development of the first Earphone named “ Matrix “ which has only one bass driver 

2010 - Development of the new 2 pcs internal receivers earphone named SSouno; it has 2 drivers which included one bass driver with one 7 mm front driver. 

 

2013 - Got the new patent of the earphone with the base of the SSouno. 

2015 - Modified the new bass drivers with the Natural Frequency at the 115 Hz and the spring to enhance the efficiency of the bass driver performance.  

2017 - Conducted an in-depth research on the differences between digital and analogue sound. 

 

2019 - Created a new concept about the 360-degree earphones - find out how to create the 3D image in the hearing performance during the audio and vision applications.

2020 - Build up the new testing specification to measure the bass performance level.   

2021 - Build up a new patent of the 3D sound and 2 new patent about the bass driver and the 3D sound performance. 

© 2026 by DB Koo Ltd  (under the DB Groups)

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