Price drop. Amazon has a Sennheiser HD 660S2 Headphones Sale, $399.00 Free Shipping $35 or with Prime. Expires: 6/15/2026 - Highly Rated at 4.5 out of 5 stars with lots of reviews.

• These Sennheiser over the ear headphones provide a natural, high-fidelity sound with a spacious soundstage. The over the head HiFi headphones are great for immersive music experiences and long listening sessions
• Sennheiser open back headphones HD660S2 with ultra-light aluminum voice coil & 42mm transducers deliver detailed highs, rich mids, & deep, controlled bass. Overhead headphones are great for gamers, professionals, podcasters
• These wired over ear head phones let you feel every note from piano lows (27.5 Hz) to bass drums (45–60 Hz) with clarity and precision, whether it is for gaming sessions, listening to music, or for desktop use
• The Sennheiser HD 660S2 Headphones deliver stunning audiophile-quality sound with rich detail, deep bass extension, and incredibly natural clarity that brings your favorite music to life. Their open-back design creates a spacious, immersive listening experience that’s perfect for critical listening, gaming, mixing, or simply enjoying high-quality audio at home. Built with premium materials and legendary Sennheiser comfort, these headphones are a long-term investment for anyone who truly appreciates exceptional sound performance.

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