Nam Tae Hyun revealed the fandom name for his band South Club during their "South Club x Adidas Guerrilla Concert Live".
During the live stream, the band revealed that the fandom name will be called "Amp". They explained further why the fandom name would be called as such. An electric guitar without an amp sounds quiet and cannot reach far in terms of its sound level. As a band, they thought and decided that the fans acted as their amplifiers in which they amplify their music several folds to a much wider audience. But also, the idea of amp fits their situation and style of music in which involves a band.
If you missed the live stream of the concert, check out the video below!