Description: amplifier: High quality mini amplifier board. 5.0 version, the transmission efficiency is higher, the transmission distance is farther. High Performance: Audio power amplifier module dual channel, max output power 2x100W, adopt with a heatsink Protection Mechanism: With overheating, overcurrent and short circuit protection to prevent total failure, protect itself from damage. The output audio is unfiltered, using general-purpose filter components, high-quality sound quality. Great for DIY speakers. Widely used in car, home theater ,etc. Specification: Model: ZK-1002M Net Weight: 66g Audio input: + AUX + U disk + computer USB (plug and play) Audio output: active speakers, passive speakers Adapter power supply: DC 5 - 24 V Number of channels: left and right dual channel (stereo) version: 5.0 Output power: 100W x 2 Large heat sink: 36x25x10mm/1.42x0.98x0.39inch Adapter speaker: 20 - 200W, 4 - 8Ω Protection mechanism: overheating, overcurrent, short circuit Color: Black Material: Plastic Size Chart: 60x60x29mm/2.36x2.36x1.14inch Package Includes: 1 Piece 2x100W 5.0 Power Amplifier Module Kit Note: You can only choose one of passive speakers and active speakers. The file system of the U disk must be FAT32, and the maximum support is 32GB.