The fact that this is ac based is alone a big plus. Sound quality is very good. Remember to halve the promised power values unless you like great amount of distortion :) Read the chip data sheet for more info. This is more of a normal amp than subwoofer type. For subwoofer use there are better, purpose built ones. Pleasantly surprised as I just wanted to know if these cheap amps are good for anything serious related to audio sound quality. I'm Pro audio engineer and I buy amps @ 400-1000€+ price range. Normally.

The fact that this is ac based is alone a big plus. Sound quality is very good. Remember to halve the promised power values unless you like great amount of distortion :) Read the chip data sheet for more info. This is more of a normal amp than subwoofer type. For subwoofer use there are better, purpose built ones. Pleasantly surprised as I just wanted to know if these cheap amps are good for anything serious related to audio sound quality. I'm Pro audio engineer and I buy amps @ 400-1000€+ price range. Normally.

The fact that this is ac based is alone a big plus. Sound quality is very good. Remember to halve the promised power values unless you like great amount of distortion :) Read the chip data sheet for more info. This is more of a normal amp than subwoofer type. For subwoofer use there are better, purpose built ones. Pleasantly surprised as I just wanted to know if these cheap amps are good for anything serious related to audio sound quality. I'm Pro audio engineer and I buy amps @ 400-1000€+ price range. Normally.

The first time I have connected this board (24AC 0 24AC), I had... smoke and "fire". R6 and R7 were black. I replaced both (10 ohms each), and I've got smoke again. I decided to remove the heatsink to see the IC chip and... surprise!!! The pin 23(VDDP2) is not there!!! How is possible this board passed the final quality tests??? This kind of problem never happened before in Banggood shop.

The first time I have connected this board (24AC 0 24AC), I had... smoke and "fire". R6 and R7 were black. I replaced both (10 ohms each), and I've got smoke again. I decided to remove the heatsink to see the IC chip and... surprise!!! The pin 23(VDDP2) is not there!!! How is possible this board passed the final quality tests??? This kind of problem never happened before in Banggood shop.

The first time I have connected this board (24AC 0 24AC), I had... smoke and "fire". R6 and R7 were black. I replaced both (10 ohms each), and I've got smoke again. I decided to remove the heatsink to see the IC chip and... surprise!!! The pin 23(VDDP2) is not there!!! How is possible this board passed the final quality tests??? This kind of problem never happened before in Banggood shop.

chegou no prazo dito pelos fornecedores muito bom o produto recomendo a todos que precisem

chegou no prazo dito pelos fornecedores muito bom o produto recomendo a todos que precisem

chegou no prazo dito pelos fornecedores muito bom o produto recomendo a todos que precisem

Not bad for the price, not sure what the 12v regulator and relay are doing? a schematic would be really nice as would a filter/crossover circuit. If using the 3 input - bridged mode for a single speaker is via Left neg and Right pos I think maybe the damping factor is probably not very good as there is a lot of speaker cone wobble Measured at least 30v P/P into a 8R speaker (bridged mode) using a 50Hz wave

Not bad for the price, not sure what the 12v regulator and relay are doing? a schematic would be really nice as would a filter/crossover circuit. If using the 3 input - bridged mode for a single speaker is via Left neg and Right pos I think maybe the damping factor is probably not very good as there is a lot of speaker cone wobble Measured at least 30v P/P into a 8R speaker (bridged mode) using a 50Hz wave

Not bad for the price, not sure what the 12v regulator and relay are doing? a schematic would be really nice as would a filter/crossover circuit. If using the 3 input - bridged mode for a single speaker is via Left neg and Right pos I think maybe the damping factor is probably not very good as there is a lot of speaker cone wobble Measured at least 30v P/P into a 8R speaker (bridged mode) using a 50Hz wave

When I received this item it turned out to be second hand. It was dirty and discoloured, and there were traces of handsoldering on the circuit board. It obviously had been repaired. But it was sold as new. The amplifier works but gets very warm even if it is in rest, with no signal. So I do not dare to use it full power. I would like a replacement.

When I received this item it turned out to be second hand. It was dirty and discoloured, and there were traces of handsoldering on the circuit board. It obviously had been repaired. But it was sold as new. The amplifier works but gets very warm even if it is in rest, with no signal. So I do not dare to use it full power. I would like a replacement.

When I received this item it turned out to be second hand. It was dirty and discoloured, and there were traces of handsoldering on the circuit board. It obviously had been repaired. But it was sold as new. The amplifier works but gets very warm even if it is in rest, with no signal. So I do not dare to use it full power. I would like a replacement.

This amplifier is excellent value for money. It is a class D digital amplifier module (not a technically correct discription but near enough) which produces a low noise purity of sound, much better than ordinary amps sound.It also has a built in speaker relay to protect your speakers from damage, which I like. The Only problem I had building this unit were minor.The aluminium heatsink was slightly loose and required tightening slightly and There is no circuit diagram with this amp module, so I think it may need some tech. knowledge, but for the price it is excellent value. I would recommend this. It sounds good.

This amplifier is excellent value for money. It is a class D digital amplifier module (not a technically correct discription but near enough) which produces a low noise purity of sound, much better than ordinary amps sound.It also has a built in speaker relay to protect your speakers from damage, which I like. The Only problem I had building this unit were minor.The aluminium heatsink was slightly loose and required tightening slightly and There is no circuit diagram with this amp module, so I think it may need some tech. knowledge, but for the price it is excellent value. I would recommend this. It sounds good.

This amplifier is excellent value for money. It is a class D digital amplifier module (not a technically correct discription but near enough) which produces a low noise purity of sound, much better than ordinary amps sound.It also has a built in speaker relay to protect your speakers from damage, which I like. The Only problem I had building this unit were minor.The aluminium heatsink was slightly loose and required tightening slightly and There is no circuit diagram with this amp module, so I think it may need some tech. knowledge, but for the price it is excellent value. I would recommend this. It sounds good.

A UNIQUE AMPLIFIER, EXTREMELY SMALL BUT VERY EFFICIENT, DUE TO THE CLASS E" FUNCTION. SOME YEARS BEFORE, RHAT CLASS WAS CONDIDERD IMPOSSIBLE IN AUDIO AMPLIFIERS !!! AS SOON AS I WILL BE ABLE TO TEST IT TO FIND OUT ITS T.H.D. *TOTAL ARMONIC DISTORTION), I WILL BE MUCH MORE SPECIFIC

A UNIQUE AMPLIFIER, EXTREMELY SMALL BUT VERY EFFICIENT, DUE TO THE CLASS E" FUNCTION. SOME YEARS BEFORE, RHAT CLASS WAS CONDIDERD IMPOSSIBLE IN AUDIO AMPLIFIERS !!! AS SOON AS I WILL BE ABLE TO TEST IT TO FIND OUT ITS T.H.D. *TOTAL ARMONIC DISTORTION), I WILL BE MUCH MORE SPECIFIC

A UNIQUE AMPLIFIER, EXTREMELY SMALL BUT VERY EFFICIENT, DUE TO THE CLASS E" FUNCTION. SOME YEARS BEFORE, RHAT CLASS WAS CONDIDERD IMPOSSIBLE IN AUDIO AMPLIFIERS !!! AS SOON AS I WILL BE ABLE TO TEST IT TO FIND OUT ITS T.H.D. *TOTAL ARMONIC DISTORTION), I WILL BE MUCH MORE SPECIFIC

Very satisfied!

Very satisfied!

Very satisfied!

Fast shipping and all good ! Now i only need a transformer :) !

Fast shipping and all good ! Now i only need a transformer :) !

Fast shipping and all good ! Now i only need a transformer :) !

the pcb is good quality

the pcb is good quality

the pcb is good quality