i stopped by guitar center today to ask them how to set up my tc helicon and this is what they've told me;

use a 1/4 cable wire and connect that from the line input of the tc helicon into the line input of the preamp. connect a dual 1/4 cable wire into the balanced outputs (LEFT/Right) of the tc helicon and into the PreSonus firebox audio interface 3 / 4.

what are they, like if i buy one and i sing would it help me sing better, i dont know just came across it on sweetwater and i was just curious.

thank you