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Super mini digital power amplifier board is new efficient digital amplifier, when inputting 5V, acquired [3 x 2]6W power. It is more thin board, which is very convenient to put in small plastic box or other gap of devices, for example, to create MP3/4 or notebook external speakers etc, any imagine, power takes USB 5V or single lithium power supply.

A power amplifier board with one 3P line /three 2P lines

Advantages: high efficient digital power amplifier chip, internal special output processing circuit, cancel the traditional LC network, used for lower EMI value than the LC! In the low voltage, it gets maximum power output, super saving energy, installation of standby electronic switch, installation of high gain buffer amplifier, installation of short-circuit protection.

Power: 3.6 to 5.5V, suitable for single lithium or USB power supply. It also uses four 1.2V batteries, transformers power supply must be added 5V voltage-stabilizing circuit, more than 5.5V chip will be burned.
Power supply: direct current (DC): 3.6-5.5V
Output power: 3W+3W (4 ohm)
SNR: 90dB

Efficiency: ≥90%

Note
1 The power positive and negative electrodes cannot be reversed, the supply voltage does not exceed 5.5V, as long as showing one of condition, it will burn IC
2 The film has high gain buffer, can not change the board of any element parameter, does not correspond to the parameters will lead to IC damage.
3 Input line need to use screen line, which can play a role of anti interference and eliminate the clutter current sound.
4 The output for the CMOS BTL driver around the horn pipe, negative of around the horn can not connect together, which is connected with a horn 4 lines are completely independent

If want to use on the computer, directly with the computer USB interface power supply will have electric current sound.(mainly audio and USB were induced, none of the power amplifier board problem, the famous USB small speakers will also like this, it can't be avoided