Specifications:

• Feature:- It is perfect for MP3/MP4/notebook- You could also power the board with 5V USB power supply.
• Power Supply: DC2.5 - 5.5V.
• Output Power: 3W + 3W (4 omega).
• SNR: 90dB.
• Efficiency: > 90.
• Product Size: 15.5 x 24mm / 0. x 0.9inch
• Product Weight: 10g / 0.4oz
• Note:- 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 V will burn IC out.- Power supply can't be reversed, power supply voltage can't be more than V, otherwise it will damage the IC.- 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.- Input wire please use shielding wire, can rise anti-interference function, eliminate clutter current sound.- Output is CMOS BTL drive mode, 4 wire is completely independent, don't connect together!

• Package Weight : 10 G / 0.35 Ounces

Package Include:

• 1 x 2 Channels 3W PAM8403 Class Audio Amplifier Board