Sennheiser HD 660 S2
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Sennheiser HD 660 S2
Type:full size (over-ear)
Connection:3.5 mm, 6.35 mm
Frequencies:8 – 41500 Hz
Sensitivity:104 dB
Impedance - 300 Ohms, wide frequency range, rich equipment.
All specifications
Specifications HD 660 S2
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E-Catalog UK editor, Headphones
Olexandr Cherkashche…, edited 08.04.2026
The information in the model description is for reference purposes.
Always clarify the specifications and configuration of the product with the online store manager before purchasing.
Catalog Sennheiser 2026 - new arrivals, bestsellers, and the most relevant models Sennheiser.
Always clarify the specifications and configuration of the product with the online store manager before purchasing.
Catalog Sennheiser 2026 - new arrivals, bestsellers, and the most relevant models Sennheiser.
Everything You Need to Know About Headphones: A Complete Technical GuideThe choice begins with understanding the design and features.
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| £346.80 |  | ||||
| £369.00 | | ||||
Sennheiser HD 660S2 Open Back Headphones 700240 | £379.00 |  | |||
Series Sennheiser HD (overhead)Compare using chart →
overhead, open, wired, detachable cable, 3.5 mm, 6.35 mm, 1.8 m, no microphone, 6 – 38000 Hz, 120 Ohm, 200 mW, battery: with case + maximum
студийные, overhead, open, wired, detachable cable, 3.5 mm, 6.35 mm, 3 m, no microphone, 12 – 40500 Hz, 300 Ohm
overhead, open, wired, detachable cable, 3.5 mm, 4.4 mm (Pentaconn), 6.35 mm, 1.8 m, no microphone, 8 – 41500 Hz, 300 Ohm
overhead, closed, combined, detachable cable, 3.5 mm, 1.5 m, Bluetooth v5.0, AAC, aptX, active noise cancellation, voice assistant, foldable, 18 – 22000 Hz, L-plug, battery: 600 mAh, up to 30 h
overhead, open, wired, detachable cable, 3.5 mm, 6.35 mm, 3 m, no microphone, 12 – 38500 Hz, 50 Ohm, battery: with case + 1.2 m — cable with microphone
overhead, open, wired, detachable cable, 3.5 mm, 6.35 mm, 3 m, no microphone, 10 – 39500 Hz, 300 Ohm
overhead, closed, combined, detachable cable, 3.5 mm, USB-C, 1.2 m, Bluetooth v5.2, AAC, aptX, active noise cancellation, 6 – 40000 Hz, 480 Ohm, battery: 700 mAh, up to 60 h
overhead, open, wired, detachable cable, 3.5 mm, 6.35 mm, 1.8 m, no microphone, 5 – 36000 Hz, 130 Ohm
студийные, overhead, closed, wired, 3.5 mm, 6.35 mm, 3 m, no microphone, foldable, 8 – 25000 Hz, 64 Ohm
overhead, closed, wired, detachable cable, 3.5 mm, 1.4 m, foldable, 18 – 20000 Hz, 18 Ohm, L-plug
студийные, overhead, closed, wired, 3.5 mm, 6.35 mm, 1.8 m, no microphone, 6 – 30000 Hz, 150 Ohm
for DJ, overhead, closed, wired, detachable cable, 3.5 mm, 6.35 mm, 1.5 m, no microphone, 16 – 22000 Hz, 70 Ohm
overhead, closed, wired, detachable cable, 3.5 mm, 6.35 mm, 3 m, 10 – 28000 Hz, 23 Ohm, battery: with case + 1.2 m — cable with microphone
overhead, open, wired, detachable cable, 6.35 mm, 3 m, no microphone, 4 – 51000 Hz, 300 Ohm
overhead, closed, wired, detachable cable, 2.5 mm (micro-Jack), 1.4 m, foldable, 18 – 20000 Hz, 18 Ohm
overhead, open, wired, detachable cable, 3.5 mm, 6.35 mm, 1.8 m, no microphone, 5 – 36000 Hz, 130 Ohm
студийные, overhead, closed, wired, 3.5 mm, 6.35 mm, 2 m, no microphone, 20 – 20000 Hz, 32 Ohm, 500 mW, battery: with case + maximum
overhead, closed, wired, detachable cable, 3.5 mm, 6.35 mm, XLR, no microphone, 5 – 28700 Hz, 130 Ohm, 300 mW
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We recommendCompare using chart →
студийные, overhead, open, wired, detachable cable, 3.5 mm, 6.35 mm, no microphone, 5 – 40000 Hz, 470 Ohm, 1000 mW, battery: with case + maximum
overhead, open, wired, detachable cable, 3.5 mm, 6.35 mm, 1.8 m, no microphone, 5 – 36000 Hz, 130 Ohm
студийные, overhead, open, wired, detachable cable, 3.5 mm, 6.35 mm, 2.5 m, no microphone, 20 – 25000 Hz, 18 Ohm, 250 mW
студийные, overhead, closed, wired, 3.5 mm, 6.35 mm, 3 m, no microphone, 5 – 35000 Hz, 80 Ohm, 100 mW, battery: with case + monitor headphones
gaming, overhead, closed, combined, detachable cable, 3.5 mm, Bluetooth, radio channel, multichannel, battery: up to 70 h
gaming, PlayStation 5, Switch, overhead, closed, wireless, Bluetooth v5.3, AAC, radio channel, 3D sound, 20 – 20000 Hz, 64 Ohm, battery: up to 200 h
студийные, overhead, closed, wired, detachable cable, 3.5 mm, 6.35 mm, 3 m, no microphone, foldable, 15 – 28000 Hz, 38 Ohm, 1600 mW, battery: with case + maximum
gaming, overhead, closed, combined, detachable cable, 3.5 mm, 1.2 m, Bluetooth v5.0, radio channel, active noise cancellation, 10 – 40000 Hz, 38 Ohm, battery: up to 44 h, with case + when using a radio channel, for BT - 36 hours
gaming, PlayStation 4, PlayStation 5, Nintendo Switch, overhead, closed, combined, detachable cable, 3.5 mm, 1.3 m, Bluetooth v5.2, radio channel, multichannel, 20 – 20000 Hz, 32 Ohm, battery: up to 50 h