Its a good reliable unit with good sound quality. I use mine with a bass box and you should note the output are connected to the rear channels, so if you fade to the front, the bass box will stop working. I found this out the hard way. The unit was sold with dual colour facia but there are no instructions on how to switch the colour from red. There are green led's in there coz i opened it up to have a look. Any ideas? let me know.