Take games, movies and music to the next level of realism with the unrestrained freedom of UHF technology. The new K912 headphones immerse you in great AKG sound, the choice of audio professionals for more than 60 years. And they extend your entertainment horizons in any direction even through walls and ceilings with a PLL-synthesized tuner and automatic frequency control for optimal reception under any operating conditions. The K912s. All of the sound, none of the limitations."