If you have been waiting for a remarkable bargain on wired headphones, look no further. The Sennheiser HD 660S2 is now available for just $349.99 on Woot, significantly reduced from its original price of $679.95. This is a substantial discount for a model that rarely falls below $400 at other retail outlets. For comparison, they are currently listed at $415.90 on Amazon. Additionally, Amazon Prime patrons can enjoy complimentary standard shipping, while non-Prime shoppers are subject to a $6 delivery charge. This purchase also includes a two-year warranty from Sennheiser. It is important to note, however, that Woot does not ship to Alaska, Hawaii, or P.O. boxes.

The open-back design of the HD 660S2 offers an expansive and natural audio experience, creating a sense of space for both vocals and instruments. With an impedance of 300 ohms, these headphones perform their best when connected to a quality amplifier or DAC, producing rich bass that remains clear even at higher volumes. The sound quality maintains its detail without becoming distorted. Comfort is another strong suit of this model—the soft velour ear pads provide a luxurious feel, while the adjustable headband ensures a secure and consistent fit. While many users find that they can wear these headphones for extended periods without discomfort, some may experience slight fatigue after several hours of use, depending on their sensitivity.

There are a few minor drawbacks to consider. As with any open-back model, some sound leakage is present, making these headphones less suitable for use in shared environments. Furthermore, while they come with two cables (one featuring a quarter-inch connector and another with a 4.4mm balanced plug), both are just under six feet in length. This may suffice for standard setups, but could be lacking in larger studios or rooms, as highlighted in a review by PCMag. However, for those seeking a clear, balanced listening experience without any manufactured alterations, and who are comfortable with a wired connection, the HD 660S2 provides excellent value at this price point. For those interested in exploring more options, check out our recommendations for the best over-ear headphones.