The Match UP S4MB CTR offers premium sound, meeting the needs of demanding music enthusiasts. The MATCH UPGRADE audio devices create a new dimension in sound quality. The central speaker UP S4MB CTR ensures an improved sound stage for the driver and passenger. It is compatible with other MATCH UPGRADE audio systems, providing homogeneous sound with superior resolution and accuracy. These speakers deliver their maximum performance when combined with our DSP amplifiers. Your safety has been considered, as the UP S4MB CTR is compatible with the SOS emergency function.