The Sennheiser HD 660S2 audiophile-grade headphones launched earlier this year and it’s time to put them through their paces for review. I am, admittedly, not overly picky when it comes to these sorts of hi-fi cans. I can certainly appreciate the sound quality, but not I’m not type to spend thousands on a pair of cans and that’s where the Sennheiser HD 660S2 come in. They, at least for me, seem to hit the sweet spot between really high-quality sound reproduction without being so expensive than I just can’t bother caring all that much. And I’m happy to say I’ve come away (mostly) quite impressed with the experience thus far. Head below for a deep dive into our time with the Sennheiser HD 660S2 headphones.