The Sennheiser HD 650 headphones provide reference-quality performance -- at a price.
Pure, natural sound. Reviewers describe music on the Sennheiser HD 650 headphones as smooth, natural and open. Bass is a particular strength, though some experts say that definition isn't the best, meaning that some sonic details occasionally get lost. These headphones require a lot of power so they're not suitable for portable players, and they have an open design, meaning sound leaks in and out. Users and pros alike recommend using an amplifier to get the best performance.ProsExcellent sound quality, Comfortable, Good bassConsBulky, Expensive, Sound leakage