Sennheiser HD 660S

The HD 660 S, successor to the legendary HD 650, features an advanced transducer system and impresses with a natural, vibrant sound profile. Thanks to its lower impedance and versatile connectivity options, it offers effortless audiophile listening pleasure. The HD 660 S is the elegant result of Sennheiser engineering. It delights with high sound precision and exceptional wearing comfort. With its punchy bass, excellently resolved mids, and pleasantly smooth, natural treble reproduction, the HD 660 S possesses a high emotional expressiveness that captivates and allows you to feel every nuance of the music. Throughout, the sound profile remains absolutely precise and transparent.

The HD 660 S features a transducer system developed by Sennheiser, which is characterized by improved control of diaphragm movements. This is achieved through a precision-crafted fine mesh made of stainless steel that follows the contour of the diaphragm. Extremely lightweight aluminum voice coils ensure the highest impulse fidelity. The transducer systems are selected in pairs with the utmost care, ensuring a very low manufacturing tolerance (± 1 dB).

The HD 660 S is designed for the highest musical enjoyment from a variety of audio sources, including mobile hi-res players. Its full sonic potential is naturally unlocked at balanced outputs. To ensure perfect compatibility with all audio sources, the HD 660 S comes with a selection of different cables. All cables are made from highly conductive OFC copper, feature extremely low microphonics, and are highly durable thanks to para-aramid reinforcement.