I don't like it that much, but I don't have the money now for a better one like Rolls RA-53b.
Amplification is weak. I think I hear a small quality drop compared to not using it too. It's more of a splitter.
I don't get it why a device like this doesn't have an on-off switch. OK, it's one less button to get noise, but I want to turn it off without having to reach back to the power socket.