The ART Dual RDB reamping DI box lets you take line signals and convert them to mic and instrument levels. This lets you record guitars, bass and more as a clean direct signal. When you are ready to put that recorded signal through an amp or other device, simply hook up the Dual RDB and push those signals to your amp of choice. This is great because you can record a guitar track direct and decide later what type of amp, tone, and effects you want on the signal. The ART Dual RDB has a clean, full-range 20hz-20kHz output, and two isolation transformers prevent ground loops. When you need to reamp your tracks the ART Dual RDB is there for you.