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Sennheiser HD 650 Open Back Headphones vs Sennheiser HD 660S2 Wired Over-Ear Headphones

Every tracked fact about the two, side by side - prices, history lows, ratings and measured tuning. No verdict: which one to buy is the visitor's decision, always.

Sennheiser HD 650 Open Back Headphones Sennheiser HD 650 Open Back Headphones Sennheiser Now ₹23,990 at Headphone Zone Lowest ever ₹23,680 on Friday, 16th Oct, 2026 ★★★★★ 4.9 4.9 · 79 reviews Full prices & history
Sennheiser HD 660S2 Wired Over-Ear Headphones Sennheiser HD 660S2 Wired Over-Ear Headphones sennheiser Out of stock at every tracked store Lowest ever ₹29,800 on Thursday, 15th Oct, 2026 ★★★★★ 4.8 4.8 · 470 reviews Full prices & history

Measured tuning, side by side

Both curves are real community measurements (gold: Sennheiser HD 650 Open Back Headphones · ink: Sennheiser HD 660S2 Wired Over-Ear Headphones). Each is level-aligned to its own 200 Hz–1 kHz mean, so rig offsets don't skew the comparison.

201001k10k151-14
Sennheiser HD 650 Open Back Headphones Sennheiser HD 660S2 Wired Over-Ear Headphones
Tuning distance±1.65 dB RMS90% match - Very close. Computed on a shared 40-point log grid, 20 Hz–10 kHz. A measurement-space fact, not a promise two ears agree.
What a curve cannot seeBuild, driver QC unit-to-unit, comfort, isolation, accessories, warranty and resale value sit outside the graph - usually what the pricier one is charging for.

The decision, factually

Cheaper right nowSennheiser HD 650 Open Back HeadphonesLowest current price across all tracked stores.
Deepest discount ever seenSennheiser HD 650 Open Back HeadphonesFrom each product's own recorded price history.

This page reports facts and expresses no opinion on which to purchase.