Mackie HR624mkii 6-inch2-Way Studio Monitor (Single Speaker) High-resolution Active studio reference monitorUltra-linear frequency response for accurate mix translation6.7" high-precision, low-distortion LF transducer1" titanium dome, ferrofluid cooled tweeterOptimized Waveguide for wide, even sweet zoneTwin FR Series amps - 100W for LF / 40W for HFCast aluminum Zero Edge Baffle minimizes diffractionFull internal damping eliminates midrange artifactsPassive radiator provides tight, articulate bass extension down to 45HzAcoustic Space, LF roll-off, and HF The new Zero Edge Baffle minimizes diffraction for a crystal clear audio image of your mix, and controls sound waves for wide, even dispersion The Mackie HR624mk2 monitor's Acoustic Space, LF roll-off and HF controls let you easily tailor the sound to suit your space and your taste Thanks to remarkably linear frequency response, with the HR624mk2 monitor, you always get accurate mix translation