Purchased 1 month ago with big problem of "hum" finally solved: ground loop. So I went to see the old village of electronics that I put a ground lift switch which serves to insulate the ground from the amp. Result (for 5 to € +), over ground loop, no more "hum" and a perfect diet for 43 € :-)

. I put 9 because it was necessary ground lift on the original product.

What is your opinion about the value for the price? Knowing what you know now, would you make the same choice?

Obviously.