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ABOUT ROCKALPHA

Rockalpha, Your first choice

Guangdong Liandake Holdings Industry Limited, Alternative name Guangdong Liandake Holdings  Co., Ltd . was established in 2009. The registered capital is USD 1 million. Brand "SP Audio" and "SX Audio".

Our compay mainly produced for car amplifier (specially for class D amplifier) and car speakers.

For car amplifier, we have our own AI and SMT & Wave workshop, 100% 4 hours aging test before final assembly. For car speakers, we have our own automatic glue machine to keep our quality. We focus on ODM project, as our experienced engineers are able to do any magic design as you want.


  • Attaching great importance to product research and development, constantly developing new products and increasing new functions.

  • Leading technology, Product quality assurance

  • Service-oriented, high quality service

Rockalpha, Your first choice

Rockalpha

Our Qualification

In 1972, Mark Levinson cracked the code of pure audio playback with hand-built stereo components that overcame every known limitation on sound reproduction. Since then, we’ve created a class of our own by consistently releasing the best sounding, longest lasting, most intuitive audio/video components in the world—products that are just as gorgeous as they are meticulously crafted. That’s the level of audio excellence you see in every Mark Levinson component today.