Part number:1 Welcome to my store , Hope you have a pleasant shopping trip! Description: It is a DC 12V 18V TDA7388 Digital Amplifier Module Stereo 50Wx4 4ohm 4-Channel Power Amplifier.Feature: 1>.Support short circuit protection 2>.Support overvoltage protection 3>.Support overcurrent protectionn 4>.Can continue the active heat dissipation 5>.Adjustable volume + Power offParameter: 1>.Product name: Audio amplifier board 2>.Model: XH-A392 3>.Power input: DC12-18V 4>.Input current: 2-6A 6>.Output power: 4*50W 7>.Audio input: 2-8ohm 8>.Terminal model: KF128-2P 9>.Frequency response range: 36KHz-22KHz 10>.Cooling method: continuous active cooling 11.Work temprature-20~85 12>.Work huimidity: 5%~99% 13>.Size: 79*95*25mmPackage List:1 x Digital Amplifier ModuleNotes: 1. Due to the difference between different monitors, the picture may not reflect the actual color of the item. We guarantee the style is the same as shown in the pictures. 2. Please allow 1-2cm slight dimension difference due to different manual measurement. Support Short Circuit Protection. Support Overvoltage Protection. Support Overcurrent Protectionn. Can Continue the Active Heat Dissipation. SHOP WITH CONFIDENCE: To provide you with the highest quality service, If you have any question, please feel free to contact us.We will provide after-sales service until you are satisfied. Support Short Circuit Protection. Support Overvoltage Protection. Support Overcurrent Protectionn. Can Continue the Active Heat Dissipation. SHOP WITH CONFIDENCE: To provide you with the highest quality service, If you have any question, please feel free to contact us.We will provide after-sales service until you are satisfied.