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Kotori Audio - Zephyr vs TRN TA4 2BA+2DD Knowles

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
Kotori Audio - Zephyr Kotori Audio - Zephyr kotori Now ₹9,999 at Headphone Zone Lowest on record ₹8,999 on Friday, 18th Sept, 2026 ★★★★★ 4.9 4.9 · 16 reviews Full prices & history
TRN TA4 2BA+2DD Knowles Hybrid  in-Ear Earphones/Headphone TRN TA4 2BA+2DD Knowles Hybrid in-Ear Earphones/Headphone TRN Now ₹8,600 at The HiFi Cat At its lowest recorded price Full prices & history

What is being compared

Both sides are in-ear monitors. The rows below are the facts each store publishes for this shelf - driver arrangement, impedance, sensitivity, plug and connectivity. A dash means the listing does not state that spec.

Spec kotori TRN
Driver configuration — Hybrid (DD+BA)
Driver setup — 2 DD + 2 BA
Connectivity Wired Wired
Plug — 3.5mm/4.4mm/2.5mm

Measured tuning, side by side

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

+20+100-10-2020501002005001k2k5k10k20k12
kotori TRN
+12+60-6-124.04.8Sub-bass20-80 Hz3.04.0Bass80-200 Hz0.10.3Lower mids200-700 Hz2.12.3Upper mids700 Hz-2.5k4.34.1Treble2.5-6k Hz-6.3-1.3Air6-20k Hz

Average level per band, relative to that curve's own 200 Hz–1 kHz middle - a taller bar plays louder there on the measured files. Same colours as the chart above.

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Hear them side by side

Wearing your own earphones or headphones? Pick them here and the player pre-corrects for their sound, so the demo plays the target tuning itself - not both mixed together.

Same signal through both tunings at once - slide to blend. Start on pink noise for the clearest read.

Tuning distance ±1.45 dB RMS 91% 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.
Bass · 20–250 Hz kotori −0.8 dB Average level difference in this band, both curves aligned to their own 200 Hz–1 kHz mean. Plus means kotori plays louder there on the measured files; minus means TRN does.
Mids · 250–2,000 Hz Level Average level difference in this band, both curves aligned to their own 200 Hz–1 kHz mean. Plus means kotori plays louder there on the measured files; minus means TRN does.
Treble · 2,000–10,000 Hz kotori −1.1 dB Average level difference in this band, both curves aligned to their own 200 Hz–1 kHz mean. Plus means kotori plays louder there on the measured files; minus means TRN 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.

Kotori Audio - Zephyr Now ₹9,999 at its 30-day median Lowest on record ₹8,999 on Friday, 18th Sept, 2026 In stock at 2 tracked stores
TRN TA4 2BA+2DD Knowles Hybrid in-Ear Earphones/Headphone Now ₹8,600 1% below its 30-day median Lowest on record ₹8,600 on Saturday, 7th Nov, 2026 In stock at 1 tracked store
Price gap right now ₹1,399 14% of the dearer one's price.
Stores with it in stock 2 vs 1 Active stores carrying each one right now - more stores usually means easier replacement and a steadier price.

The decision, factually

Cheaper right now TRN TA4 2BA+2DD Knowles Hybrid in-Ear Earphones/Headphone Lowest current price across all tracked stores - ₹8,600 vs ₹9,999.
Deepest discount ever seen TRN TA4 2BA+2DD Knowles Hybrid in-Ear Earphones/Headphone From each product's own recorded price history.

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

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