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Sennheiser HD 660 S

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description Sennheiser HD 660 S Overview

The Sennheiser HD 660S offers a remarkably open and natural soundstage, making it ideal for mixing and mastering where accurate stereo imaging is crucial. Its open-back design provides a more spacious listening experience compared to closed-back alternatives. While requiring a decent headphone amplifier to truly shine, the HD 660S delivers exceptional detail retrieval and a relatively flat frequency response, allowing for precise critical listening. The comfortable design ensures extended listening sessions are less fatiguing, solidifying its place as a top choice for discerning audio professionals.

help Sennheiser HD 660 S FAQ

Does the Sennheiser HD 660 S need a headphone amplifier?

Its 150-ohm impedance is easier to accommodate than the 300-ohm HD 600 or HD 650, and many laptops or interfaces can reach usable volume. A competent headphone output can still provide better headroom than a weak phone dongle, especially with quiet recordings.

Will people nearby hear the HD 660 S?

Yes. It is an open-back headphone, so sound leaks outward and outside noise remains audible. That makes it appropriate for a quiet studio or home listening room, but poorly suited to commuting, offices, or microphone recording in the same room.

What is the difference between the HD 660 S and HD 660S2?

The HD 660S2 is a 300-ohm successor tuned for stronger low-frequency extension than the original 150-ohm HD 660 S. Both retain the open-back HD 600-family form factor, but they do not sound identical.

Is the HD 660 S suitable for mixing?

Its clear midrange and open stereo presentation can help with vocal balance, editing, and spatial decisions. Like any headphone, it should be used with familiar reference tracks and ideally checked against monitors because its bass and treble balance are not perfectly neutral.

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