Hi there i've recently put together new rig and i have a question about something i was unaware of... the new rig I am running is a korg dtr-1000 -> sansamp rbi -> svt4 pro. today when I went to the store to pick up my new rack for all this gear the guy selling me my rack sold me two balanced cables to run between my tuner, the sansamp, and my amp. i thought i could just use regular instrument cables to run between the different pieces of rack gear. can someone explain to me the difference there is in a balanced cable? also was he correct in having me purchase a balanced cable in the first place? thanks alot! - Dan T.