The presonus hd9 closed back studio headphones provide professional grade audio clarity for musicians producers and djs who demand precision in their sound. Featuring 45mm neodymium drivers they offer an extended frequency range from 10hz to 26khz ensuring deep controlled bass detailed mids and crisp highs. Their closed back design enhances isolation making them ideal for studio monitoring and immersive listening. Designed for comfort and durability the hd9 features cushioned ear pads and an adjustable headband to reduce listening fatigue during long sessions. The earcups rotate 180 degrees on two axes providing flexibility for one ear monitoring perfect for djs and live performers. With a lightweight build and premium accessories including a 3m cable gold plated adapter and storage bag the hd9 is a versatile choice for both professional and casual listening.