hi guys, i am just wondering if anyone can explain "Close Ratio gear" ?

I heard a lot of people said DC2R and EK9 gear box has CLose Ratio Gear?

as I am getting a EK9 gear box, i would like to find out if thatz true. The sales on the ATS website told me that the gear ratio of each gear got nth to do with the word "close ratio" but i really have no idea.

anyway comparing EK4 and Ek9 box .. only LSD different? what about close ratio? anyone can give me a correct answer with something to support? Thx