The install was very straightforward with no issues. After install the GBA would not work correctly. I experienced game glitches and screeching from the speaker. Uninstalled and everything was back to normal. I might have gotten a bad unit though but I am unwilling to try another.

The only humming I hear now is when I meditate.

Piece seemed a bit mishapen, so the contact that is supposed to go to the power terminal was way off. Damaged the piece trying to make it work to no avail. I dont recommend this part.

When I installed this it makes a nasty sound when shutting off, awful product. I tired to contact to refund but nothing yet

Pretty easy to install. I tried listening through headphones but I could still hear the faintest hum but it was that quiet before the installation as well. After installing the amp, the hum did not get any louder, so I’m assuming this kit is doing its job.

The sound quality is very much improved in comparison to the stock sound. With the amplifier addition, this is a must have. Installation was not too difficult