For recording, touring, broadcast, pro-audio or plain old performing, you simply can't do better than Whirlwind's HotBox Active Reference DI. Advanced active electronic circuitry completely eliminates low-end saturation and provides an incredibly wide band-width with virtually no signal loss. Plus there's tons of headroom! The HotBox can be powered by two 9V batteries (minimum fife of 500 hours), or you have the option of utilizing the 48V phantom power built into most mixing consoles. And a ground lift provides true, switchable ground isolation, even when using phantom power. For true transformer-less, totally transparent box operation, the HotBox has it all.