Chinese Mini amps PAM8403 and PAM8610 bought and reviewed

[HaerdenC]

I bought a few very inexpensive Class D amps. I bought the

PAM8403

Speaker Power :2-8W
Application:LCD TVs, monitors,Laptop,Portable Speakers,DVD players, Game consoles,Phone / speakerphone
Speaker With:4-8ohms recommended:4 ohms
Net weight:1g
Color:As the pics show
Operating voltage: 2.5V-5.5V
Package include:1 x amplifier board
Size:21 x 18 x 3.4mm(L x W x H)
Can use the computer USB port 5V power supply
or using a mobile phone charger USB port 5V power supply
battery power can also be used
high efficiency:90%
can provide 3W (left channel) +3 W (right channel) output power in the 4Ω load and 5V power supply conditions
A class, B class amplifier such efficiency is only about 30%
D class amplifier is highly respected today
D class amplifier efficiency is extremely high, not because of temperature affect the sound quality
but do not add heat sink and take less space
noise canceling circuit was built in the amplifier board
power on / off without pop noise
module has a short-circuit current protection and over-temperature protection

10 pc's of these you van buy for 2 euro + 2 euro shipping

My review:
YouTube

PAM8610

This amplifier plate adopts the official standard circuit design, chip selection USES is the United States imported original Long Ding micro class D power amplifier chip.This chip is strong not strong you can go to check its information.Good product chip share and the vast number of music lovers, this is our consistent principle!The power amplifier has a high efficiency, large power, in the case of the 12 v power supply can output 10 w + 10 w power, chip without heat sink, also have overheated, over-current protection function, such as function is very powerful, so to speak.This board with functions of switch, the SW nipple, will shut down power amplifier.

1.Supply voltage: DC 6V-15V
2. Output power: 10w + 10w (8 load)
3. Efficiency: 90%
4. Shutdown Current: 4uA
5. Quiescent current; 20mA
6. SNR: 86%
7. Total harmonic distortion: 5W / 1KHz / 8 ---- 0.1%
8. Frequency range: 20Hz-20KHz
9. Input impedance: 15K
10. Output Impedance: 4-8
11. Amplifier board size: 28mm * 22mm * 2.5mm

They where Freebies on wish and 2 euro shipping however you can buy them at aliexpress for about 0.8 euro with free shipping !!! That's less then a dollar !!!

My review:
YouTube

 

[FauxFrench]

I have tried the two chips as well and, like you, I was amazed about the performance considering the price. Both were hooked up to large book-case speakers and to floor-speakers. Even the small PAM8403 could handle the floor-speakers at normal listening level.

These chips are ideal for many less demanding purposes and provide absolute HiFi quality. OK, it is an old norm but still they sound much better than expected.

The chips can be supplied on various boards (most very cheap) and the boards are ideal for first time DIY's just to get some (very cheap) hands-on experience.
What you learn is not proportional to what it costs.

 

[HaerdenC]

I have tried the two chips as well and, like you, I was amazed about the performance considering the price. Both were hooked up to large book-case speakers and to floor-speakers. Even the small PAM8403 could handle the floor-speakers at normal listening level.

These chips are ideal for many less demanding purposes and provide absolute HiFi quality. OK, it is an old norm but still they sound much better than expected.

The chips can be supplied on various boards (most very cheap) and the boards are ideal for first time DIY's just to get some (very cheap) hands-on experience.
What you learn is not proportional to what it costs.

I'm pretty sure they make even good mid end amps if you build a descent power supply with big capacitors, small heat sink specially the bigger one. For a pair on no nonsense bookshelf speakers for example. Due to the small form factor the distance between the chip and the filter components is very close that makes being on a budget even making the amp to perform better 🙂

 

[addysoftware]

I also bought several of these. First time a few, just for testing. Amazed with their performance, I bought immediately other 30 pcs of small and 10 pcs of the big one. For me and my neighbours also. And I have another example of a good amplifier,
TPA3116D2 2X50W peak (2x15W HiFi). It works at 24-26V and sounds absolutely perfect.
Costs about $6-$8.

 

[FauxFrench]

TPA3110, TPA3118, TPA3116 and TDA8932 are very cheap and amazingly good as well. Ideal for DIY beginners.
Start with something a bit more simple and very cheap and when you start having a feeling for DIY work, continue with the more complex constructions.