With one simple operation, you'll experience sound with ultimate clarity and presence across a wide audio spectrum, from deep lows to crisp highs. (goodereader.com)
This box also allows you to switch between audio spectrum profiles which adjust the surround sound experience to suit the game you're playing. (pocket-lint.com)
This is a new marketing term that essentially means they can reproduce the expanded audio spectrum available from uncompressed or lossless audio 96 kHz / 24 - bit or better. (ecoustics.com)