Bought 2 years ago to power a 'Roland Mobile Cube' (portable amp); I have noticed poor filtering of 50hz mains hum and also additional 'burbly' electronic noises, most likely added by the switched-mode power supply itself. I Did not return it at the time because, back then, I was less educated about such issues. In short, ignore the brand name and don't expect this to perform any better than an un-branded 10 Euro power supply. (Although maybe I got a bad one, who knows?)