CR3-XBT Mackie 3" Creative Reference Multimedia Bluetooth Studio Open Box READ The CR3-XBT Mackie 3" Creative Reference Multimedia Bluetooth Studio monitor speakers are compact and portable, featuring a 2-way configuration with a rectangular shape and a black color. Made of wood, these studio monitors have Bluetooth connectivity and a built-in stereo crossover. With a 50W RMS power output, they are equipped with microphone input, input gain control, and a rear-firing port for enhanced sound quality. Perfect for musicians, producers, and sound engineers, these Mackie speakers offer a full range configuration and amplified performance for professional audio monitoring. This unit is missing the RCA cables. (no big deal they are very cheap to buy), I don't think these were ever used, But I am not the original owner.