Delivering an outstanding performance, the HD 660S2 stands out with its expansive frequency response, meticulous sensitivity, and minimal harmonic distortion, making it an excellent choice for audiophiles in search of a truly immersive and top-tier listening experience.
Immerse yourself in a superior audio experience with the HD 660S2 headphones, boasting expansive frequency response, precise sensitivity, and minimal harmonic distortion for audiophile-grade sound quality.
Get the Details
The HD 660S2 impresses with its exceptional performance, offering a wide frequency response, precise sensitivity, and minimal harmonic distortion, making it a standout choice for audiophiles seeking an immersive and high-fidelity listening experience.
Dylan Crane
Brand Manager
Details
Sennheiser HD 660S2 Open-Back Headphones
Step into a world of audiophile excellence with the Sennheiser HD 660S2, a modern refinement of the legendary HD 660S. Designed for discerning listeners, these open-back, over-ear headphones feature enhanced sub-bass response, matched drivers, and high-resolution transducers for a naturally balanced and emotionally powerful listening experience. With upgraded 300-ohm Duofol voice coils and a compliant surround tuned to 70 Hz, the HD 660S2 delivers double the sound pressure at 20 Hz compared to its predecessor — all while preserving pristine clarity and detail across the spectrum.
The open-back design promotes spacious soundstage reproduction, while ultra-soft velour ear cushions and an ergonomic headband provide lasting comfort. Crafted in Ireland with meticulous build quality, the HD 660S2 also comes with both 1/4" and 4.4mm balanced detachable cables, plus a 3.5mm adapter and carry pouch. It’s a powerful evolution in Sennheiser’s legacy of natural sound, offering unmatched clarity, imaging, and acoustic warmth for extended critical listening sessions.
Matched Driver Pairing: Minimal ±1 dB channel tolerance ensures balanced stereo imaging and tonal accuracy.
Premium Comfort Design: Ultra-soft velour ear cushions and ergonomic headband deliver fatigue-free comfort over long sessions.
Diverse Cable Options: Includes both 1/4" unbalanced and 4.4mm balanced cables, plus 3.5mm adapter and carry pouch.
Crafted in Ireland: Built with precision materials and engineering in Sennheiser’s European manufacturing facility.
Q&A Section
Q: What’s the difference between the HD 660S and HD 660S2? A: The HD 660S2 features improved sub-bass extension, optimized airflow, and 300-ohm Duofol voice coils for richer low-end and enhanced clarity.
Q: Are the HD 660S2 headphones suitable for portable use? A: These are designed for stationary, high-fidelity listening with headphone amps and are not ideal for portable use due to the open-back design and 300-ohm impedance.
Q: Can I use the HD 660S2 with a smartphone or laptop? A: While possible, the high impedance (300 ohms) requires a high-quality headphone amp to reach full performance potential.
Q: Do they support balanced audio? A: Yes, the HD 660S2 includes a 4.4 mm balanced cable for use with balanced-output devices, enhancing dynamic range and reducing noise.
Q: Are the earpads replaceable? A: Yes, the velour earpads are replaceable, allowing for long-term maintenance and comfort.
Q: How comfortable are the HD 660S2 for extended listening? A: Extremely comfortable thanks to lightweight construction, velour ear cushions, and a pressure-optimized headband design.
Q: What accessories are included with the headphones? A: The HD 660S2 comes with two detachable cables (1/4" and 4.4mm), a 3.5mm adapter, and a soft carrying pouch.
Q: Where are the HD 660S2 headphones made? A: They are precision-engineered and manufactured in Ireland with high-quality components.
Reviews
Product Description
Product Description
Immerse yourself in a superior audio experience with the HD 660S2 headphones, boasting expansive frequency response, precise sensitivity, and minimal harmonic distortion for audiophile-grade sound quality.
Get the Details
The HD 660S2 impresses with its exceptional performance, offering a wide frequency response, precise sensitivity, and minimal harmonic distortion, making it a standout choice for audiophiles seeking an immersive and high-fidelity listening experience.
Dylan Crane
Brand Manager
Details
Details
Sennheiser HD 660S2 Open-Back Headphones
Step into a world of audiophile excellence with the Sennheiser HD 660S2, a modern refinement of the legendary HD 660S. Designed for discerning listeners, these open-back, over-ear headphones feature enhanced sub-bass response, matched drivers, and high-resolution transducers for a naturally balanced and emotionally powerful listening experience. With upgraded 300-ohm Duofol voice coils and a compliant surround tuned to 70 Hz, the HD 660S2 delivers double the sound pressure at 20 Hz compared to its predecessor — all while preserving pristine clarity and detail across the spectrum.
The open-back design promotes spacious soundstage reproduction, while ultra-soft velour ear cushions and an ergonomic headband provide lasting comfort. Crafted in Ireland with meticulous build quality, the HD 660S2 also comes with both 1/4" and 4.4mm balanced detachable cables, plus a 3.5mm adapter and carry pouch. It’s a powerful evolution in Sennheiser’s legacy of natural sound, offering unmatched clarity, imaging, and acoustic warmth for extended critical listening sessions.
Matched Driver Pairing: Minimal ±1 dB channel tolerance ensures balanced stereo imaging and tonal accuracy.
Premium Comfort Design: Ultra-soft velour ear cushions and ergonomic headband deliver fatigue-free comfort over long sessions.
Diverse Cable Options: Includes both 1/4" unbalanced and 4.4mm balanced cables, plus 3.5mm adapter and carry pouch.
Crafted in Ireland: Built with precision materials and engineering in Sennheiser’s European manufacturing facility.
Q&A Section
Q: What’s the difference between the HD 660S and HD 660S2? A: The HD 660S2 features improved sub-bass extension, optimized airflow, and 300-ohm Duofol voice coils for richer low-end and enhanced clarity.
Q: Are the HD 660S2 headphones suitable for portable use? A: These are designed for stationary, high-fidelity listening with headphone amps and are not ideal for portable use due to the open-back design and 300-ohm impedance.
Q: Can I use the HD 660S2 with a smartphone or laptop? A: While possible, the high impedance (300 ohms) requires a high-quality headphone amp to reach full performance potential.
Q: Do they support balanced audio? A: Yes, the HD 660S2 includes a 4.4 mm balanced cable for use with balanced-output devices, enhancing dynamic range and reducing noise.
Q: Are the earpads replaceable? A: Yes, the velour earpads are replaceable, allowing for long-term maintenance and comfort.
Q: How comfortable are the HD 660S2 for extended listening? A: Extremely comfortable thanks to lightweight construction, velour ear cushions, and a pressure-optimized headband design.
Q: What accessories are included with the headphones? A: The HD 660S2 comes with two detachable cables (1/4" and 4.4mm), a 3.5mm adapter, and a soft carrying pouch.
Q: Where are the HD 660S2 headphones made? A: They are precision-engineered and manufactured in Ireland with high-quality components.
