Which Class-D amp to get from Aliexpress?

[Guerilla]

Dead link to Onoorus?

 

[mamocel]

From long and frustrating experience: Do Not buy amp board devices from Aliexpress .
Buy cheap = Buy twice ...and If Dim .. repeatedly. I did.. for a time

You have to know what you are buying...there is a good deal, if you have a minimum of knowledge...

 

[AllenB]

Dead link to Onoorus?

Perhaps this link - https://www.aliexpress.com/item/100...caec3314b80bd636a322299723b&afSmartRedirect=y

 

[jean-paul]

I have the little MA12070 amp. I have it hooked up by optical from my tv and pc. It is a stereo amp so I have the "line out" hooked to a subwoofer amp then to a JBL 12 inch sub. The MA 12070 is powering two Onix XLS speakers. To me the amp is better than the TPA3116 amps i have had. Quite as a mouse from turn on to turn off. Just lets the music or movies do their own thing. Here is the front photo from Aliexpress:

Hi I would love to see a picture of the innards of that one. Did you disassemble it?

 

[ernperkins]

I disassembled mine. It consists of two boards connected by a ribbon cable. The main board is basically the amp with inputs and power connectors. The speaker connections are the four large holes in the board - these connect to the speaker terminals when the board is mounted into the housing. The 2nd board has the LED driver and bluetooth chips. The housing has the four speaker terminals and some threaded bolts glued to the bottom to give it some weight. Lots of electronics for the price! I haven't done any testing/listening as I'm deep into a speaker project.

 

[mamocel]

Arf..MA12070p...the I2S version...I prefer the analog version with a good well chosen dac .
like this : https://fr.aliexpress.com/item/1005005172480064.html?gatewayAdapt=glo2fra
For my futur project !

 

[TNT]

busfoower

Thats how it starts...

//

 

[jean-paul]

There are worse layouts out there. Thermal stitches seem OK too. Also it has output filtering not found in more expensive amplifiers. The costcutting already started by leaving out some decoupling caps. Low cost and high modding potential.

Maybe the more noisy MA12070P is more quiet in reality when compared with devices that use MA12070 without any filtering….

Thanks for the pictures ernperkins! Please tell us how it performs.

 

[mamocel]

In the kind of my sabaj a20a....

 

[mamocel]

Admittedly.. but I prefer the A/D conversion to chips provided for that... If infineon brings me a new chip with dac AKM inside.
i sign it According to the specs ... we can do without filtering or reduce it to a minimum ... it was a bit of their commercial advantage .. ???

 

[Guerilla]

Any with highpass for Left Right and sub out?
Cheers!

 

[Lbsvn]

Perhaps this link - https://www.aliexpress.com/item/100...caec3314b80bd636a322299723b&afSmartRedirect=y

There is this with ma12070 but no reviews
O-NOORUS A80 MA12070 80WX2
https://a.aliexpress.com/_mOXyxJa

Was wondering if it can be moded like the Brzhifi ma12070

 

[zek]

Also with one MA12070
https://www.aliexpress.com/item/100...f116820106386076657e153f!12000032350440822!sh
and with two MA12070
https://www.aliexpress.com/item/100...f116820106386076657e153f!12000032622430037!sh

 

[jean-paul]

It could be that O-Noorus also is a sub brand of the same factory that produces these devices under various names. They have similarities and advertising also has similarities.

The question is if they use output filters.

 

[Lbsvn]

@jean-paul you could be correct they all looks the same under different brands, most probably manufactured at the same place here is another from brzhifi

https://a.aliexpress.com/_mNfDBag

Just need something can be easily modded or minor mod and use as a soundbar replacement, 2.1 with remote control under $150

 

[jean-paul]

The old Sabaj A10a has remote control and a subwoofer line output. The one I now have has been modded and it is a nice amplifier after that.

 

[mamocel]

@jean-paul you could be correct they all looks the same under different brands, most probably manufactured at the same place here is another from brzhifi

https://a.aliexpress.com/_mNfDBag

Just need something can be easily modded or minor mod and use as a soundbar replacement, 2.1 with remote control under $150

The saber 9018Q2M dac will certainly spoil the performance of the amp... Too bad...

 

[jean-paul]

Maybe it is better not to assume.

 

[Lbsvn]

I saw there is a thread of the old A20a mod, between the old A10a and old A20a which would be easier to mod with phenomenal results?

 

[jean-paul]

Didn’t touch the A20a I had but adding coils to the A10a was easy.