Enjoy electrifying music on the Sennheiser HE-90 Orpheus headphones, which work best with a vacuum tube amplifier such as the HEV 90. Offering unmatched sound quality, these high-end electrostatic headphones are perfect if you are one of those, who don’t like to compromise on their audio experience. Delivering elaborate mids, superior highs, and deep and detailed bass, these Sennheiser headphones are a real treat. The ear-cups with a headband-type design of these electrostatic headphones are comfortable to wear even during extended usage. Made with a wooden enclosure, these Sennheiser headphones ensure durability. Definitely a matter of owner’s pride, the Sennheiser HE-90 Orpheus is a great investment for music lovers.