Sennheiser takes what makes their Momentum headphones so good, and puts it into a smaller, cheaper on-ear version that still delivers great sound. The On-Ear version looks pretty much identical to its bigger brother, minus the leather. This doesn't take away from the premium comfort and feel, with Expert Reviews calling them "beautifully designed, sturdy and remarkably light." The obvious design change is the switch to an on-ear form factor (versus over-ear), but T3 calls them "superlative" in the comfort department. Being on-ear also means they're not ideal for blocking out outside noise, so you may need to stick to over-ear or ear buds in crowded places. What you will get is what Trusted Reviews calls a "fun and enjoyable" music experience, and Pocket-Lint says they don't "disappoint" and were "consistent" throughout audio tests. If you liked the original Momentums but didn't have the financial means to purchase a set, the cheaper On-Ear model delivers everything the larger set does at a more wallet-friendly price.