5Pcs 3W×2 Mini Digital Power Audio Amplifier Board USB 5V Power Supply Arduino M

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5Pcs 3W×2 Mini Digital Power Audio Amplifier Board USB 5V Power Supply Arduino M
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Product Introduction
This is a mini 2 channels 3w amplifier with PAM8403. It is perfect for MP3/MP4/notebook. And you could also power the board with 5V USB power supply.
1. Power supply: DC2.5-5.5 V.
2. Output power: 3W + 3W (4Ω).
3. SNR: 90dB.
4. Efficiency: > 90%.
5. Size: 15.5×24 mm.
NOTE:
1. Single lithium battery or USB power supply is suitable, also can use four sections of 1.5V battery, if use with the transformer power supply,it must add 5V voltage circuit, more than 6V will burn IC out.
2. + and - of power supply can't be reversed, power supply voltage can't be more than 6V, otherwise it will damage the IC.
3. there were high gain buffers, can't change any board device parameters, do not accord with the parameters of the IC will lead to damage.
4. input wire please use shielding wire, can rise anti-interference function, eliminate clutter current sound.
5. output is CMOS BTL drive mode,4 wire is completely independent, don't connect together!
Package Include:
5PCS * 2 Channels 3W PAM8403 Class D Audio Amplifier Boar
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eed 7-10 days)
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If the item is defect when you receive it or you are not satisfied with it, please return it within 14 days for a replacement or money back. But the items must be back in factory condition. Please contact us and double check the return address before you return it.
If is item is defective in 12 months, you can return it to us. We will send you a new replacement after receiving the defective item.