HarmonicDyne Black Hole vs Koss: Porta Pro Wireless 2.0 Bluetooth Headphones - White - Bluetooth Model - Arctic White

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.

HarmonicDyne Black Hole harmonicdyne Now ₹9,534 at Linsoul Lowest ever ₹8,697 on Tuesday, 6th Oct, 2026 ★★★★★ 5.0 5.0 · 2 reviews Full prices & history

Koss: Porta Pro Wireless 2.0 Bluetooth Headphones - White - Bluetooth Model - Arctic White Koss Now ₹9,509 at Turntable Lab Lowest ever ₹9,509 on Friday, 16th Oct, 2026 Full prices & history

Measured tuning, side by side

Both curves are real community measurements (gold: HarmonicDyne Black Hole · ink: Koss: Porta Pro Wireless 2.0 Bluetooth Headphones - White - Bluetooth Model - Arctic White). Each is level-aligned to its own 200 Hz–1 kHz mean, so rig offsets don't skew the comparison.

HarmonicDyne Black Hole Koss: Porta Pro Wireless 2.0 Bluetooth Headphones - White - Bluetooth Model - Arctic White

Tuning distance±4.63 dB RMS72% match - 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 nowKoss: Porta Pro Wireless 2.0 Bluetooth Headphones - White - Bluetooth Model - Arctic WhiteLowest current price across all tracked stores - ₹9,509 vs ₹9,534.

Deepest discount ever seenHarmonicDyne Black HoleFrom each product's own recorded price history.

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