If you want a more bass-extended, higher-impedance headphone for focused listening, choose Sonova Sennheiser HD 660S2; if you need a lighter, lower-impedance option for analytical listening, choose Sennheiser HD 560S. For work at a desk, I’d lean toward the HD 560S for its 240-gram weight and 120-ohm impedance, while the HD 660S2 suits listeners who want its deeper stated bass extension and supplied cable options.
• HD 660S2 strength: Its listed frequency range reaches down to 8 Hz, and the package includes both 6.3 mm and 4.4 mm cables. Trade-off: Its 300-ohm impedance may make it a less straightforward match for some devices than the HD 560S.
• HD 560S strength: It weighs 240 grams and has 120-ohm impedance, making it the lighter, lower-impedance choice on paper. Trade-off: It does not include the HD 660S2’s listed 4.4 mm cable.
• HD 660S2 fit: Choose it for a desk setup where bass extension, multiple cable connections, and a carry pouch matter.
• HD 560S fit: Choose it for analytical listening, gaming, or a lighter wired headset for a computer.
The HD 660S2 is an open-back, over-ear wired headphone with dynamic drivers, 300-ohm impedance, and a stated frequency range of 8 Hz to 41.5 kHz. Its product information describes deep bass extension and refined acoustic performance. That makes it a considered pick for someone who wants to settle in for music, podcasts, or gaming at a desk and values the model’s bass-oriented description.
Its included connections are a 1.8-meter 6.3 mm cable and a 1.8-meter 4.4 mm cable, plus a 6.3 mm-to-3.5 mm adapter. A carry pouch is also included. Those details give the HD 660S2 flexibility across compatible wired setups, although its 300-ohm impedance is worth checking against the output you plan to use.
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We compare products from their published specs and features; the verdicts below are our independent editorial opinions.
Updated: 2026-10-09 · 5 min read · Independent comparison
The HD 560S is an open-back, over-ear wired model with dynamic drivers, 120-ohm impedance, and a listed frequency range of 6 Hz to 38 kHz. Its description emphasizes natural, accurate sound and analytical listening. For work involving focused music listening, comparing recordings, or gaming at a computer, those priorities may be more useful than a bass-forward presentation.
At 240 grams, it is the lighter of these two models by the listed specifications. Its product description also highlights velour earpads, an around-ear design, and angled driver alignment. The included kit lists a cable, adapter, headphones, and user manual; it uses a 6.3 mm jack with a 3.5 mm adapter.
The HD 560S is a sensible pick if you want a lighter wired headphone with lower listed impedance and a sound profile described around accuracy. Skip it if the HD 660S2’s 4.4 mm cable, carry pouch, or stated deep bass extension better matches your setup. Like the HD 660S2, it is not wireless, and its open-back design is not the choice to make if you need a closed, isolating listening experience.
• For a lower listed impedance → Sennheiser HD 560S. Its impedance is 120 ohms versus 300 ohms for the HD 660S2.
• For lower listed weight → Sennheiser HD 560S. It weighs 240 grams; the HD 660S2 is listed at 0.3 kg.
• For an analytical, reference-oriented description → Sennheiser HD 560S. Its product information specifically focuses on neutral, accurate listening and comparisons.
• For stated deep bass extension → Sonova Sennheiser HD 660S2. Its product description calls out that feature, and its listed frequency range starts at 8 Hz.
• For a supplied 4.4 mm cable → Sonova Sennheiser HD 660S2. It includes a 1.8-meter cable with that connector, as well as a 6.3 mm cable.
• For a supplied carry pouch → Sonova Sennheiser HD 660S2. The pouch is part of the listed package contents.
• For a work-from-home computer setup → either, depending on your priority. The HD 560S favors lower weight and analytical listening; the HD 660S2 offers additional cable options and a bass-extended sound description.
• For wireless use or strong isolation → neither. Both are wired open-back headphones, so look elsewhere if you need Bluetooth or a design intended to block surrounding sound.
Some searches blur headphones with earbuds, including phrases like “best memory foam ear cushions bluetooth earbuds for work” or “best sweatproof ear clip headphones for work.” Neither phrase describes these two products: both are wired, over-ear, open-back headphones, and the supplied details do not list Bluetooth, memory foam cushions, or sweatproof construction. The HD 560S description does mention velour earpads, but that is not the same claim as memory foam.
Likewise, the “best kids headphones for work” is not a useful match for these models. Both are described for adults, and neither product’s listed features establish a child-specific design. For a work desk, the practical choice is between the two wired open-back designs, not a kids’ headset or a Bluetooth earbud.
My Verdict
For desk work, I’d choose the HD 560S if lower weight and an analytical listening focus matter most. The HD 660S2 may suit you better if its stated bass extension and included cable options are priorities.
The HD 560S is listed at 120 ohms; the HD 660S2 is listed at 300 ohms. Check that the headphone’s impedance and connector suit the device or audio equipment you intend to use.
No wireless connectivity is listed for either; both are wired, open-back headphones. The HD 660S2 lists sound isolation as a control detail, while the HD 560S lists no noise control. Neither is presented as a wireless, noise-cancelling headset.
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