The Mackie HR624mk2 is a high-resolution active studio reference monitor engineered for accurate mix translation. The cast aluminum Zero-Edge Baffle controls sound waves for detailed lows, articulate mids and shimmering highs, while the rear-firing passive radiator delivers tight, extended bass from a sealed design. Each monitor is individually tested and calibrated in an environmentally controlled chamber. THX pm3 certified for studios, post-production, and premium listening rooms. Sold individually.