TDA7942digital power amplifier board is a Swiss STMicroelectronics co., LTD. (TDA7492 STMicroelectronics) as the core, high cost performance!!!!!! The price is not expensive, but the sound quality is very good, can be said to be the bane of analog IC. Hundreds of yuan LM3886 may not have the sound quality is good! Suitable for multimedia, desktop power amplifier, etc., suitable for multichannel amplifier, play video frequency division, manufacturing subwoofer amplifier, power supply simple 10-26 v (dc voltage can be), 4 24 v power supply can be up to 50 w the horn

+ 50 w, the maximum power of 50 w * 2/8 uefa, mono BTL power 100 w / 4, small size, 70 * 57 mm, height of 21 mm (including heat sink) with heat sink when the goods are dispatched.

The highest frequency response: 20 k

Characteristics are as follows:

1, use the patch SMT high-speed SMT machine, high temperature reflow soldering, performance is very stable, not manual welding process can be compared

2, 4 set of gain control (note orders can provide technical support, monolithic changed, if you don't ask how this board gain adjustment to the largest by default)

3, 70 x57mm ultra small volume can be used to repair, grind the active speakers, improve quality, can also use the combined block into a multichannel amplifier or 2.1 power amplifier, a lot of useful

4 and bring the strong output short circuit and thermal overload protection, and prevent impact switch machine, this is very rare in other 50 w amplifier board

Use notice:

When the speaker impedance is 4 the working voltage must be less than 18 v, speaker impedance is 6 o, working voltage couldn't exceed 24 v, speaker impedance is eight o, working voltage can't more than 26 v, the power don't answer the reverse polarity.