If you're looking at this you know what it is! Can honestly say I feel a difference when playing. It's very satisfying to plug in your prized vintage amp, see a crazy high voltage on the screen that you can then bring down to a healthy level. Great at your home/studio and even more great for playing at venues with unpredictable electrics.

***Please note, this is for use with US voltage amps such as your original vintage fenders etc. It doesn't replace your step-down transformer, so you would use your step-down to power the BrownBox (at 110-120v) then it has two outputs, so you can actually power two amps from this.***

This unit is opened but literally never used. I have two and never needed this one. It's completely new condition apart from a factory blemish in the paint and one truly minuscule scratch (pictured). You have to really focus in to see them both, but just to be 100% transparent....