Summary: I was wrong. I`m musician, and can confirm, just a great product! Sound quality is nice, warm, and precise, at the same time. Powerful, absolutely no any distortion, I easily can recommend that.
Summary: Bought this because I want to use an mp3 player with my Bose Wave sound system. Without the pre-amp the volume on the Wave and the mp3 player need to be at max to get any sound - but you also get a lot of system noise. This pre-amp sorts this out - it works really well, it's well made (metal case).