Sort:  
 2 years ago  

They are extremely cheap, between 2 and 3 US dollars. I hope it can last a few years. I will be updating the performance of the board over time in the comments.

Thanks for comment

 2 years ago  

No problem, those type of items are always expensive around here

 2 years ago  

I'm sorry, I'll do my best to post an upcoming video of making a similar amplifier with recycled electronic components.
Happy day!

 2 years ago  

That's so cool to hear