25ft Speak-On Type Plug to XLR Female Extension Cable SpeakOn, an alternative to TRS, are fully shielded connectors with a locking mechanism for extra connection security, an is primarily used in audio connections, such as connections between speakers and amplifiers. XLR is a connection type primarily used in professional/commercial audio/video applications, such as microphone connections. This cable provides interface functionality between SpeakOn and XLR connection types, so you can connect between microphones, speakers, and other A/V equipment that don't all have the same connection types. Therefore, you gain greater flexbility and versatility with your audio devices, enhancing your system's overall technical and economic efficiency. However sometimes your cables just aren't long enough, so these extension cables can give you that extra reach you need, allowing you to experience high-quality sound that only superior cables can achieve, no matter where you place your devices.