Equips High-Quality 38mm Dynamic Driver For Hi-Fi Audio

Sennheiser HD 660S2 features a 38mm dynamic driver that elevates audio to a higher level. It is equipped with high-end components for superior sound quality. This configuration provides an immersive listening experience, ideal for audiophiles.

Open-Back Design Offers An Expansive Soundstage & Precise Imaging

The HD 660S2 has an updated coil which now matches the renowned HD 600 and HD 650 300-ohm impedance. This redesigned coil offers improved electrical damping and magnetic force for an impactful impulse response. It has significantly better accuracy, responsiveness, and resolution and twice as much sound pressure at the lowest frequencies. Sennheiser has retained extraordinary precision and balance throughout the sub-bass, mid-bass, and beyond. Extension on the low end changes everything — by creating more space for the sound. Against a deeper backdrop, highs feel more brilliant, the soundstage deeper and open, and emotions stronger with precise imaging. 

Exquisite Design With All-Day Wearing Comfort

The Sennheiser HD 660S2 is built entirely in Ireland and quickly grabs your attention due to its excellent build quality. The HD 660S2's velour earpads can only be described as a physical delight. The headband won't detract from your music thanks to its soft padding and just-right tension for optimal acoustic alignment. The HD 660S2's open-back design provides an incredibly comfortable environment, even during prolonged sessions. The ergonomic headband and lightweight design rule out any potential discomfort on top of your head. You'll rapidly develop an attachment to a listening experience as physically relaxing as the pleasant, non-fatiguing sound at its core.

Easy Connectivity With High-Quality Cables To Ensure Lossless Signal Transmission

Sennheiser has included two sets of beautiful cables with the HD 660S2 to accommodate your audio configuration. It has no microphonics and achieves a stable connection. The package includes a 6.3mm (Single-Ended) cable and a 4.4mm (Balanced) cable with 1.8m in length, making them compatible with most audio sources. One benefit of using the HD 660S2 with a balanced connection is that it offers an even lower noise floor and excellent dynamic range. The result is a broader soundstage, precisely controlled transients, and impossibly distinct instrument separation.

Versatile Connectivity With High-Quality Cables

Sennheiser HD 660S2 comes bundled with 2 high-quality detachable cables to upgrade cables easily. One cable features 6.3mm termination, and the other features 4.4mm termination. A 6.3 mm to 3.5 mm adapter is available along with the cable.