Radial EXTC-SA Guitar Effects RouterThe EXTC allows you to get creative with your effects pedals, using them in your mix on any recorded track. Add a touch of distortion or chorus to a lead vocal, flange on a violin, or fuzz on piano the possibilities are endless. The EXTC takes the line level balanced output of your recording interface and converts it so an instrument level high Z output optimized for guitar effects pedals, so you can Reamp any track through your pedalboard with ease.