Feature:
Haven't had much reason to use the bass enhancer. I record mostly acoustic guitars, flutes, vocal, etc. But I did experiment with some recorded music and found it really punched it up the low end.

Quality:
Seems pretty solid to me. You won't want to banging it around. But in a studio enviroment it should stand the test of time just fine. I don't think I would take it on the road. It's really designed with the studio in mind.

Value:
Best $100.00 you could spend on your recording gear. Which is surprising! Considering that just about everything else in your setup is going to cost more than the Ultrafex PRO.

Desirability:
I like the way Behringer products look. They stand out from the pack. True, they almost all look alike. But in the end what really matters is the end result. Behringer gets the job done and for a budget price. You can spend a whole lot more for another manufacturer's equipment. And to be honest with you can get better equipment. But the difference in quality isn't worth the huge increase in price. Me ... I rather save my money and use it for something else like a good quality mic or maybe food.

Sound:
Simply sounds great! You will hear the difference. It adds a "presence" that will amaze you; especially once you switch it back to normal. You will be saying to yourself, "Wow, what happened to my sound!" I have used other enhancers, etc. but almost always came away disappointed. I don't feel that way about the Ultrafex Pro.

Support:
Not on this unit but did have some problems with a Behringer mixer that they resolved promptly for me. (bad power supply)

Overall:
Something better will likely come along eventually. But in the meantime, I'm sticking with my Ultrafex; especially at this price.