Free Shipping,20 pcs/lot,5V USB Powered Dual Channel Mini Digital Amplifier Board 3W+3W with Wires

Product Description

Dual channel digital amplifier board, dual channel design. This amplifier board can be powered by USB, by one lithium battery or 1.2V batteries. Equipped with built-in high-gain buffer amplifier and short circuit protection on this amplifier board.

Description:

• Built-in high-gain buffer amplifier, built-in short circuit protection
• Powered by 1 x lithium battery or 4 x1.2V batteries or USB power
• 5V voltage regulator circuit is required if powered by a transformer
• Power: 3.6-5.5V DC
• Output Power: 3W+3W (4ohms)
• SNR: 90dB
• Efficiency: >90%
• Max. Closed Loop Gain: 24dB
• Wire Length: Approx. 7.5 inch (short), 11.5 inch (long)

Precautions:

• Do connect the polarity correctly, and supply voltage must be under 5.5V
• Do not change any component parameters on board, or it will cause damage
• Try to use shielded wire as the input line for better anti-interference performance
• Cathode ends of left & right speaker can not be connected together

1,We will arrange to prepare goods and shippment within 1-3 days(include weekend) once your payment is finished verfication by Alibaba.

2,We ship from Hong Kong by Economy Postal Air Mail

,and delivery time is normaly 9-20 business days,can take a bit longer(about 15-30 working days) for some countries/area,such as South Africa,Middle East, East Euro, Africa.

3,if you want to choose the most fastest way,please contact us, we will help you arrange it,but we need to add some shipment cost. Please check it as below:

 4, Import duties, taxes and charges are not included in the item price or shipping charges. These charges are the buyer's responsibility,but in order to ensure you receive the minimum tax, we declare goods as Gift / Sample.

5, We ship the items according to the Detail Address you leave to us, so please confirm it carefully before you submit.address information

1,  we accept Escow,MasterCard,Postepay,etc, please check it as Below:

2,When make payment using by Escow,your money is deposit securely in account no matter what kinds of payment you choose,and money would’t be released to us before you confirm satisfactory package.

3,If you have any problems for panyment, just feel free to contact us by Tramanager or Email as soon as possible.

1,One year warranty is provided. The items have been check carefully by Q.C before shipment.

2, Only defective products will be offered exchange or full refund, and man-made damage is not our responsibility .Defective goods must be sent to us within 3 days after you receiving the Item ,The customer is responsible for the return.

Customer’s satisfaction is our purpose,we wish that we can provide the competitve price and best quality products to our clients,if you are satisfied with the items you placed, please leave feedbace to us.

If you are not satisfied,please feel free to contact to us,we will solve the problem on basis of mutual benefit, Any cilents complaints meet our careful attention.