Mostly used for ground lifting, I love these di-boxes (owning 3 of them). Decent gadget, very useful for 9V battery running, ground lifting and pads. I can't compare the notorious behringer sound with other di-boxes (I don't have any of other brand), but I like the simple, functional design and hard, durable case. Used for acoustic guitar, keyboards and also for ungrounding a laptop with projector. I think I won't need any better di-boxes in the future.