Sennheiser HD 660 S - Dynamic Open-Back Stereo Headphone vs Sennheiser HD 660S2 Open Back 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 660 S - Dynamic Open-Back Stereo Headphone Sennheiser Now ₹39,990 at AVStore Lowest ever ₹33,718 on Sunday, 4th Oct, 2026 ★★★★★ 4.8 4.8 · 470 reviews Full prices & history

Sennheiser HD 660S2 Open Back Headphones Sennheiser Now ₹27,990 at Headphone Zone Lowest ever ₹27,990 on Wednesday, 7th Oct, 2026 ★★★★★ 4.8 4.8 · 34 reviews Full prices & history

Measured tuning, side by side

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

Sennheiser HD 660 S - Dynamic Open-Back Stereo Headphone Sennheiser HD 660S2 Open Back Headphones

Tuning distance±2.22 dB RMS87% 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 660S2 Open Back HeadphonesLowest current price across all tracked stores - ₹27,990 vs ₹39,990.

Deepest discount ever seenSennheiser HD 660S2 Open Back HeadphonesFrom each product's own recorded price history.

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