MK speaker is m& up of m&; K sound is produced, while KK speaker is produced by Ken Creissel. These two brands have different word-of-mouth and product positioning in the speaker market. In addition, MK speakers adopt advanced audio technologies such as direct engraving recording technology and digital sampling recording technology to provide higher quality audio performance. KK speakers adopt unique technologies, such as conduit treble technology and double push-pull technology, to achieve better audio effects.