The A1 is an overstable utility disc that fills the gap between midranges and putters. The A1 is perfect for power throwers who want to avoid the possibility of their shot turning over. The disc is consistent and reliable in all wind conditions and perfect for short, trick shots as well as high wind approach shots.
The 400G series is the regular 400 plastic with a shot of adrenaline. It is the base 400 plastic mixed with another resin that give the plastic a slightly different feel than the base 400 series. The additive also makes the disc more durable and requires more time to break it in.