Amplifiers can double or triple the rewards of all their characters during a certain time, this includes, exclusively: Missions, parties, sagas, classes and dungeons, while with amplifiers your rewards increase, as previously mentioned. In the case of the 2X amplifier it gives the player the opportunity to have his prizes doubled, and to make each character can participate in two missions at the same time (For the same time) while the 3X amplifier triples the prize giving it the opportunity that each player character can participate in three missions simultaneously.