I love this pedal, it can change the sound of your bass in all frequencies more than you could ever need. I use it to add a little extra depth to the low end and it works a treat.
It does hum/hiss slightly when you increase the higher frequencies but this would only really matter if you were using it for recording purposes and really wouldn't be any problem in a practice session or even on stage.
I am aware that everybody complains about it being made of plastic but it still feels very pretty robust and I fully believe it would hold up okay in a rough gigging environment.
For around 20 euros it's brilliant and there really is absolutely nothing to grumble about here.
This is my first Behringer pedal and after using this one, I am now happy to try out a few others.
Definitely recommended!!!
Update 24th Oct 2020.....
I am so glad I never payed more for a more expensive make, it's as good as anything else out there. Every time I use this pedal it brings a smile to my face. I play a few different bass's and this is so good at adjusting the overall sound of each very easily, accurately and quickly. The lower frequencies go way lower than you will ever need (unless you want to cause an earthquake!).
If you use batteries to power your pedals, changing one on the Behringer pedals is a little fiddley but I will also say the battery life in this particular pedal is very long so it's not something you'll be doing too often.
Ignore the grumblers... Yes, I'm sure It would feel nicer in a metal housing but after a hell of a lot of pretty heavy footed use in work-boots, despite the plastic case, I am now convinced it's pretty much indestructible.