Amaka, as a member of the Date Clan is a main master in the flow of chakra. She can use this technique, to increase more then one thing at once. Meaning, she can control the flow in chakra in both her strength and speed, a feature not directly granted. Amaka however, is seemingly never ready to use this technique unless in a crisis situation. From what she was stated, no one has ever lived when she's used this technique, and she's supposedly used it twice before.