Features 1.With excellent manufacturing technology, it is not easy to have false welding 2.With overvoltage protection, undervoltage protection, overheating protection and short circuit protection, the performance is stable 3.Multiple input modes to meet the needs of various working scenarios. For your convenience 4.Applicable to sound engineering, electronic equipment, industrial engineering, etc 5.Used to amplify audio signal, left and right dual channels, stereo mode. Suitable for 15 to 100W; 4 Ω to 8 Ω Specification Item Type: Power Amplifier Module Material: PCB Model: ZK502MT Power: 2 x 50W Sound Source Input: BT , AUX Adaptive Power Supply: DC 9 to 24V Adaptive Horn: 15 to 100W; 4Ω to 8Ω Number of Channels: Left and Right Dual Channels (Stereo) BT Version: 5.0 (> Approx. 15m / 16yd, Unobstructed) Purpose: Amplify Audio Signal to Drive Speaker Applicable Scene: Industrial Engineering, Sound Engineering Power Supply Voltage: 12V: 8Ω / 12W + 12W, 4Ω / 20W + 20W 15V :8Ω / 18W + 18W, 4Ω / 30W + 30W 19V :8Ω / 30W + 30W, 4Ω / 40W + 40W 24V :8Ω / 40W + 40W, 4 Ω / 50W + 50W Package List 1 x Amplifier Module 1 x Screwdriver 3 x Knob Hat 1 x Radiating Plate 1 x Power Head 9 x Screw 8 x Copper Column 2 x Acrylic Board