Closed back, over-ear model provides noise isolation and listening comfort in a compact, lightweight design. Connectivity Technology: Wired In-line smart 3 button remote and mic on the cable are compatible with Apple iOS devices Sennheiser engineered 18-ohm transducers deliver wide frequency response and high output levels when connected to portable audio devices Foldable stainless steel headband makes it easy to pack and store so Momentum can travel with you. 2 year global warranty when purchased from an authorized Sennheiser dealer The HD 1 AEi headset brings signature Sennheiser sound to an updated iconic design. Premium components like the stainless steel headband and real leather covered headband and ear cushions illustrate precision craftsmanship and exude luxury. The new folding headband design provides greater portability. The new slightly larger ear cups feature ergonomically designed, memory foam cushions for improved ambient noise isolation and extreme comfort during long listening sessions. This is an Apple iOS compatible model with single-sided detachable cable incorporates an inline remote and mic for controlling music and taking calls. The HD 1 AEi again raises the performance bar for premium wired mobile headsets.
First, the HD1 headphones are simply the newer renamed version of the Momentum 2.0. Beginning in 2017, Sennheiser was forced to market the Momentum 2.0 under a new name, because it was found out that somebody else held the copyright to the name Momentum in the U.S. So, the Momentum 2.0 that is still for sale as "new" on Amazon is an older production run that ended in 2016, with some as old as 2014! If you're wondering what year your headphones were produced..
By these are my favorite portable headphones. The sound is overall rich and dynamic. Bass is punchy, deep and impactful, the mids are clear and right where they should be. The treble is a little dark. Cymbals sometimes sound pushed back in the mix.They could use a little more detail on top, but at least it is never harsh or grating or offensive.The sound of these headphones are right in my wheelhouse because they sound very much like the HD 650, which ..