"Five Stars" What Hi-fi? Magazine
"They Convey Every Last Detail of Any Genre"
AKG engineers have optimized the K551 headphones for a fully immersive listening experience. Starting with a big 2" driver on each ear, these reference-class headsets use Real Image Engineering to create a highly realistic sound environment with a true sense of three-dimensional space.
Stylish and portable, the K551s let you take AKG studio-quality sound with you go wherever you go. And an in-line microphone lets you take calls from your iPhone. The lightweight, comfortable K551s have impressive passive noise reduction and extremely low sound-leakage levels. So you can stay blissfully inside your sound environment for hours on end.
"The K551s sound expertly balanced – and never boring or flat," notes England's What Hi-fi? magazine, which awarded the AKGs its top rating of Five Stars. "They convey every last detail of any genre you throw at them, with top-notch timing ensuring an upfront, exciting listen wherever you are."
Famous AKG Sound Quality
For over 60 years, AKG Acoustics has been a leader at creating studio sound in headphones. AKG holds over 1,400 patents for its groundbreaking products and has received two technical GRAMMY® Awards (in 2010 and 2005) for sound innovation. And the K551 DJ headphones easily live up to this tradition.
A Realistic Sense of Width, Distance, and Depth
It's one thing to hear music with headphones. It's quite another thing to hear music with a realistic sense of width, distance and depth. That's exactly what AKG has engineered with the K551 headphones. Optimized for a fully immersive listening experience, these reference-class headphones use Real Image Engineering to create a highly realistic sound environment with a true sense of dimensional space.
Powerful Detailed Sound
Two 1-31/32-inch (50-millimeter) drivers, the largest in the AKG product line, produce powerful, detailed sound from portable devices and home audio systems alike. Music is rich and layered, while sound environments seemingly unfold before you no matter where you've set the volume.
Closed Back Design
Traffic is loud. Subways and airports are loud. Other people's phone calls are loud – and annoying. But you may never know it, because K551 headphones offer effective sound insulation. Premium foam ear pads wrapped in soft leather help create an acoustic seal, so all you hear is the music you love. The K551s' closed-back design offers enhanced passive noise reduction and extremely low sound-leakage levels, while an in-line microphone lets you answer a call from your iPhone as easily as you listen to a song.
With large ear cups and a lightweight headband, the stylish and portable K551s provide hours of comfortable, continuous listening and let you take AKG studio-quality sound with you wherever you go. And when you're not using the headphones, a 2D-axis fold-flat mechanism makes them easy to store or transport. | 
