The Mackie CR3.5BT powered studio monitors deliver professional-quality sound with Bluetooth connectivity and tone-shaping controls. The CR3.5BT monitors provide clear and powerful sound in any space. Use the tone knob to adjust the sound, starting with the transparent studio reference quality and gradually adding more low end and high-end sparkle for casual listening or partying. With a variety of inputs and switchable orientation modes, the versatile CR3.5BT monitors handle all your listening needs.