Behringer OT-2 transformers

A few months back, I was ragging on the POS Behringer DI box that had failed miserably at a gig. That Behringer DI400P sounded muddy and the ground-lift switch just was not working and I had to replace it with my SM Pro DJDI. In any case, I did some digging to find out what others were saying about it. Some have said that if you send a hot voltage (like a bass guitar with a very hot output) into it, the DI box output loses the lows. So I started looking to see what kind of transformer they had in it and that is when I found out that they use the Behringer OT-2 transformer. Very little is know about these audio transformers of theirs. But from what I read, the original OT-1 series did not have magnetic shielding. That is bad news, especially if you have one of those on top of a bass player’s rig. Apparently, Behringer learnt from this and are now shipping these DI400P DI boxes with these new, shielded OT-2 transformers. I have not opened a DI400P DI box to check if they really have these new transformers inside. What I can vouch for is that the DI box that we used at that event was pretty beat up. Another thing that Behringer need to look at is the ground lift switch on these DI400P DI boxes. Those plastic switches are seriously horrible. I would buy spares and replace them every 6 months or so, especially if they are heavily used. I have a client that recently bought some Behringer DI boxes. I guess I will check out if Behringer really shipped those with these OT-2 magnetically shielded transformers or not.