Board Thread:Questions and Answers/@comment-25413416-20140917215636/@comment-24152851-20140918090149

Ditto I have no idea, I don't think so. His powers have nothing to do with sound. I can't remember Echo Echo ever doing that, but he's quite likely capable since he can transmit all kinds of sounds (like Kevin's versidian vibrations).

He's made of light particles, called photons. I just don't get that whole "energy being" thing, but personally I feel it's a bit different.