If you are in need of a DI box with multiple channels, then you need to have yourself a look at the Ultra-DI Pro DI4000.
This professional active DI box is a great solution to both live and studio applications. It comes with 4 channels for you to use and there are 1/4" TRS connectors as well as 3-pin gold plated XLR connectors to give you incredible signal integrity. There's a switchable input attenuation that allows input levels of up to +40 dB. On each channel you'll find an extremely precise 8 segment LED meter for optimum performance and to help you monitor your levels. This DI box also allows you to plug directly into speaker outputs with up to 3,000 Watts. If you're having phase problems, it's not an issue thanks to the integrated phase switch that is on this unit. Cutting out some of the higher frequencies is incredibly easy thanks to the high-cut filter which cuts off around 8kHz. And as with all Behringer products, the Ultra-DI Pro DI4000 has been built with high quality components and rugged construction to ensure a long life.