STUDIO MONITOR (ACTIVE) The auto amplified MR624 monitor offers professional performance, clarity and perfect fidelity in the mix, allowing the user to listen with the confidence that their mix will sound good in any other system. Thanks to Mackie's extensive experience in monitor design, the MR624 is precisely tuned to deliver the most realistic mix, be it a dialogue, hip hop, rock or any other material. Our proven waveguide provides an ultra-wide listening point and a consistent stereo image, while the Acoustic Space controls allow you to adjust the frequency response of the monitor to suit the studio.