Mongoose

Very useful tool. Has two main functions:

1. Focuses the low end of the mix.

2. Allows you to check what your mix will sound like when mastered for vinyl.

Simple, dead easy, to use, decent sound, and a GUI that is very no nonsense, direct and to the point. The high-frequency widener on this box is fantastic, and that it does this without distorting the bass frequencies, is really, really cool.

Again, fantastic little piece of kit you never knew you needed until you've seen it.