Sennheiser
Sennheiser
Sennheiser HD660S2
Key Specs
Open-back, 8Hz-41.5kHz, 300Ω, improved driver
Best For
Updated reference mixing
Product Overview
Sennheiser HD660S2 is a studio headphones option for updated reference mixing. Key specs include Open-back, 8Hz-41.5kHz, 300Ω, improved driver.
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Price last checked: May 29, 2026
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The Sennheiser HD660S2 offers excellent sound at $400, outpacing peers in its price range.
Pros
- +Improved driver
- +accurate reference mixing
- +open-back design
Cons
- −High impedance
- −limited isolation