I just got a guitar and the Line 6 IV 120w. Will the amp do all of the basic delay for u2 songs easily, or do in need a separte pre amp like the Korg SDD 3000. I am following tutorials that explain delay time and give values such as 300ms. My guitar and amp will never leave my man-cave so I'm just playing for fun. I do have some money so purchasing the Korg not a big deal, just need to know if it is necessary, not better, for my very beginner skills and ears. Thanks!