Acoustikinesis

Echo DeMille (Heroes)
According to NBC.com's character reference, Echo is a sound manipulator. He can mimic or distort sounds, replicate frequencies, and create sonic blasts of devastating proportions. Shortly after becoming a mail carrier, Echo's power began to manifest. When his fight or flight reflex is activated, his ability to manipulate sound increases greatly. He can also absorb electrical energy and convert it on impact into a powerful sonic attack, although this can weaken him.

Echo apparently has substantial knowledge of the physics behind sound. He is able to create sounds of very specific frequencies, including the legendary "brown note", target specific areas of the human ear, mimic elaborate music, and even convert electricity into sound by acting as a "human telephone".

According to his assignment tracker file, Echo's control index is 45%. His data analysis shows his biological level at 35, cerebral at 40, elemental at 75, and temporal/spatial at 25.