Brand/Model: JAC JP-20000Type: High-efficiency Class D digital power amplifierDesign: Compact 1U or 2U slim-rack architecture with an eye-catching turquoise/metallic blue front panel.Controls: Twin rotary gain knobs with LED indicator trees (Signal, Clip, Protect, and Power).Ventilation: Heavily slotted front air intake grills optimized for persistent, heavy-duty cooling.