Koss: Porta Pro Utility vs Sennheiser - HD 599 Open

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.

Not this pair? Swap either side:

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Open head-to-head

Koss: Porta Pro Utility Headphones Koss Now ₹4,746 at Turntable Lab Lowest on record ₹4,729 on Thursday, 22nd Oct, 2026 Full prices & history

Sennheiser - HD 599 Open Back Wired Headphone Sennheiser Now ₹8,490 at Headphone Zone Lowest on record ₹8,042 on Wednesday, 4th Nov, 2026 ★★★★★ 4.8 4.8 · 484 reviews Full prices & history

What is being compared

Both sides are headphones. The rows below are the facts each store publishes for this shelf - driver setup, impedance, sensitivity, back design and connectivity. A dash means the listing does not state that spec.

Spec Koss Sennheiser

Impedance 60Ω —

Connectivity Wired Wired

Back design — Open-back

Measured tuning, side by side

Both curves are real community measurements (gold: Koss · ink: Sennheiser). Each is level-aligned to its own 200 Hz–1 kHz mean, so rig offsets don't skew the comparison.

Koss Sennheiser

Tuning distance ±2.85 dB RMS 83% match - Close. Computed on a shared 40-point log grid, 20 Hz–10 kHz. A measurement-space fact, not a promise two ears agree.

Bass · 20–250 Hz Koss −0.5 dB Average level difference in this band, both curves aligned to their own 200 Hz–1 kHz mean. Plus means Koss plays louder there on the measured files; minus means Sennheiser does.

Mids · 250–2,000 Hz Koss +0.8 dB Average level difference in this band, both curves aligned to their own 200 Hz–1 kHz mean. Plus means Koss plays louder there on the measured files; minus means Sennheiser does.

Treble · 2,000–10,000 Hz Koss −1.9 dB Average level difference in this band, both curves aligned to their own 200 Hz–1 kHz mean. Plus means Koss plays louder there on the measured files; minus means Sennheiser does.

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.

Price over the last 30 days

Daily lowest price across every tracked store, from the site's own price history. The line is one product's own range - the two cards are not drawn to a shared scale.

Koss: Porta Pro Utility Headphones Now ₹4,746 at its 30-day median Lowest on record ₹4,729 on Thursday, 22nd Oct, 2026 In stock at 1 tracked store

Sennheiser - HD 599 Open Back Wired Headphone Now ₹8,490 at its 30-day median Lowest on record ₹8,042 on Wednesday, 4th Nov, 2026 In stock at 4 tracked stores

Price gap right now ₹3,744 44% of the dearer one's price.

Stores with it in stock 1 vs 4 Active stores carrying each one right now - more stores usually means easier replacement and a steadier price.

The decision, factually

Cheaper right now Koss: Porta Pro Utility Headphones Lowest current price across all tracked stores - ₹4,746 vs ₹8,490.

Deepest discount ever seen Koss: Porta Pro Utility Headphones From each product's own recorded price history.

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

Keep going

EQ preset: Koss EQ preset: Sennheiser All Headphones More comparisons