The adapter connected perfectly. So, as an adapter, it's excellent. So far, so good.
On the other hand, I didn't find any difference in signal amplification when comparing reception with and without the amplifier. So, as an amplifier, it's average.
Of course, it could also be an issue with the radio device.

So I installed it in a Volkswagen Polo because it had a Chinese source and generally had poor signal, so this brought it up to par. Relatively easy installation, the only thing you have to do is steal power from the battery cable that goes to the source to supply it