Sennheiser HD 550 Hi-Fi Headphones - Clearance / Open Box 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 550 Hi-Fi Headphones - Clearance / Open Box Sennheiser Out of stock at every tracked store Lowest ever ₹27,744 on Thursday, 1st Oct, 2026 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 550 Hi-Fi Headphones - Clearance / Open Box · 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 550 Hi-Fi Headphones - Clearance / Open Box Sennheiser HD 660S2 Open Back Headphones

Tuning distance±2.28 dB RMS86% 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.

Deepest discount ever seenSennheiser HD 550 Hi-Fi Headphones - Clearance / Open BoxFrom each product's own recorded price history.

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