Yeahbox audio is not a regular well-known brand, but a miscellaneous brand audio without the authorization of a regular brand. Without brand authorization, brand recognition and support, quality and performance cannot be guaranteed. Yeahbox audio has not passed the formal quality certification, and there are certain quality problems. The common problems of user feedback are poor sound quality, sound distortion and poor durability. Problems will affect the user's experience and the life of the sound. As a famous brand stereo, Yeahbox lacks a perfect after-sales service system. Problems encountered in the use process, unable to get timely technical support and after-sales guarantee, bring inconvenience and trouble to users.