Home > Service,Warranty&Returns



Sinbosen audio has professional service technical team to give our clients suggestion of full sound system.
Please tell our sales about your speaker specification, your activity space and Attendance in the show, we will give you best suggestion to set up your stage.



After confirm the order, we will make the Commercial Invoice for you.
Once received your deposit payment,we will start to make your order.

Normally our lead time is 1-3days. We will show your order productive process, test testing and inspection and package details.

About the shipment, we will help you to find the safe and economic way. After delivery the goods, we will let you know the tracking number.
If any problem on the customs clearance, we will try our best to help you to solve the issue.



► Warranty Policy

Power Amplifier (FP series,DSP series, K series and D series amplifier)Microphone — 3 Years warranty
Speakers,Line array, Subwoofer  — 2 Years warranty (All of drivers of line array or subwoofer warranty is within 3 months after you received goods.)


1-3 Months 

3 Months-1 Year 

After 1 Year to 3 Years 

Over the Service Lifetime 

All the spare parts (Included complete amplifier board, power supply board, output and input board etc.) will be freely provided, even though just sample order.
Necessery small spare parts will be freely provided,free shipping cost.
Necessery complete board will be freely provided,
but you need to pay the freight.

Necessery small spare parts will be freely provided,but
you need to pay the freight.
If you want the complete boards for swap,you should pay it based on our making cost,also include the shipping cost.

We'll be responsible for repair and give you components at making cost,and you have to pay the freight.


► Return and Refund Policy
We do not accept merchandise for return. 
If you insist on returning the product, it should not affect the possibility of a second sale.
If we have refund agreements, you will be responsible for the return shipping charges and all customs duties from your country to China. 
The payment will be refunded to you after we receive the items.



All warranty policies only apply to the machine under normal operation and normal conditions.
For those after-sales due to incorrect operation or test , you should pay the cost by yourself.
For mass order, we will supply free spare parts with your order together.So you can ship them with your goods to save freight cost.