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6xx vs 660s

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Tripokaridos
33
Jun 28, 2021
HD650 are smoother warmer than HD 660s, But HD 660s are way faster with way better imaging and separation clarity is more on 660s also , sound signature feels like its between the HD600 and HD 650 . I like both of them a lot but HD 660s is better more technical headphone for sure . I use them over 2 years side by side .