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HiFiMAN - RE400 (Unboxed) - Android vs Sennheiser HD 4.40 BT - Wireless Headphone

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.

HiFiMAN - RE400 (Unboxed) - Android HiFiMAN - RE400 (Unboxed) - Android HiFiMan Out of stock at every tracked store Lowest ever ₹1,699 on Saturday, 12th Sept, 2026 ★★★★☆ 4.3 4.3 · 102 reviews Full prices & history
Sennheiser HD 4.40 BT - Wireless Headphone Sennheiser HD 4.40 BT - Wireless Headphone Sennheiser Out of stock at every tracked store Lowest ever ₹7,490 on Saturday, 12th Sept, 2026 ★★★★★ 4.8 4.8 · 470 reviews Full prices & history

Measured tuning, side by side

Both curves are real community measurements (gold: HiFiMAN - RE400 (Unboxed) - Android · ink: Sennheiser HD 4.40 BT - Wireless Headphone). Each is level-aligned to its own 200 Hz–1 kHz mean, so rig offsets don't skew the comparison.

201001k10k140-15
HiFiMAN - RE400 (Unboxed) - Android Sennheiser HD 4.40 BT - Wireless Headphone
Tuning distance±2.03 dB RMS88% 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 nown/aLowest current price across all tracked stores.
Deepest discount ever seenHiFiMAN - RE400 (Unboxed) - AndroidFrom each product's own recorded price history.

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