K1-80.4 function：
一、80 Watt 4 channel high performance amplifier
二、Adjustable high and low pass filters
三、Thermal/short-circuit overloading protection power on and protection of LED indicators
Cooperation model
We provide OEM service，customizing products according to your specifications and requirements to fit for your local market.providing customers with high-quality customized products and services.
Product purchase instructions
Once the product is sold, it will not be returned. If the product is defective and other maintenance problems,the buyer should
return the product in the original conditions to us and should bear the shipping costs for return. If any part is required to be
replaced, the buyer should also pay for the costs of the parts to be replaced. Before returning the items, please confirm the
return address and the logistics method with us. After you give the items to the logistic company, please send us the tracking number. As soon as we receive the items, we will repair or exchange them ASAP.
Low Pass Filter