The Products Have 10 Years  Repair Guarantee
     We burn in all gears for more than 100 hours and check several times before shipping, to make sure that our products have a good quality control.
    
First year repair guarantee:
     If the gears have any problems (manufacturing defects and which is not caused by the user), customers can ship back the gears, we will refund the shipping cost (customers must submit the shipping bill following which we will reimburse the amount to customers, please note that we will only refund shipping cost equal to what the customer had initially paid us for shipping the gears to them when placing the order , and the refund only valid with the original customer). We will repair the defective gears for free and then ship back to customers, we will cover the full shipping cost shipping back to the customers.
    Please note:
1, If the gears have not any problems but customers had shipping back, we don't cover any shipping cost, and the customers want to pay the shipping cost for shipping back to them.
2, If the gears have  fault while customers just received within 15 days and we check it is had fault , we will cover  shipping cost of the gears shipping back to China, and shipping a band new unit to the customers . The fault unit will repair and sale in used market.
3, If the gears have  any problems while customers just received  within 15 days and we check it is had not fault in fact,  we don't cover any shipping cost, and return the unit's price to customers (not include any shipping cost) but don't  shipping the unit back to customers.
4, The shipping back gears must pack with the original pack box and foams  , otherwise if damage during shipping we don't  cover the repair charge.
5, We will test the shipping back gears based on the world standard  or the AP SYS-2722 , we will trustily to report the issue to customers .

After the completion of First year Repair guarantee :
     If the gears have any problems (manufacturing defects and which is not caused by the user), in this case, the customers only pay for both ways (to and fro) shipping costs ,the replace parts' cost and repair labor charges.


User inflicted problem repair guarantee:
     Customers must pay for both ways (to and fro) shipping ,the cost of parts and labor charges.

          
     If you have any inquiries, please send email to 
          audio-gd@vip.163.com
     We will reply as soon as possible.