Behringer DI box completely useless

This Behringer DI400P Ultra-DI DI Box was a complete failure at a wedding function I attended last night. The band’s acoustic guitarist  was at a loss at what to do. So in the end, I lent them my own trusty SM Pro DJDI DI box for the acoustic guitarist to use and all I can say, that one act saved the day. This Behringer DI-400P goes into my shit list today. It sounded muddy, the ground-lift switch was terrible (it did not work and there was hum a-plenty) and it just was a very bad experience using it. So spend your money and get a better DI box. Just stay clear of this Behringer junk!