DUNU DK4001 HiFi Audio vs HiBy x FAudio Project

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.

DUNU DK4001 HiFi Audio Hi-Res Beryllium PVD 5 Driver Hybrid Earphone - DK-4001 DUNU Now ₹85,567 at HiFiGo Lowest on record ₹85,495 on Friday, 16th Oct, 2026 Full prices & history

HiBy x FAudio Project Ace JP Japan Version In-Ear Monitors IEM Earphone CM 2-Pin - 0.78mm CM 2-Pin / 3.5mm / 4.4mm HiBy Now ₹33,962 at MTMT Audio Lowest on record ₹33,801 on Thursday, 22nd Oct, 2026 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 DUNU HiBy

Impedance 32Ω 24Ω

Sensitivity 112dB 110dB

Connectivity Wired Wired

Connector mmcx 2-pin

Plug 3.5mm/4.4mm/2.5mm 4.4mm balanced

Measured tuning, side by side

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

DUNU HiBy

Tuning distance ±1.91 dB RMS 89% 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 DUNU −0.8 dB Average level difference in this band, both curves aligned to their own 200 Hz–1 kHz mean. Plus means DUNU plays louder there on the measured files; minus means HiBy does.

Mids · 250–2,000 Hz DUNU +0.4 dB Average level difference in this band, both curves aligned to their own 200 Hz–1 kHz mean. Plus means DUNU plays louder there on the measured files; minus means HiBy does.

Treble · 2,000–10,000 Hz DUNU −2.3 dB Average level difference in this band, both curves aligned to their own 200 Hz–1 kHz mean. Plus means DUNU plays louder there on the measured files; minus means HiBy 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.

DUNU DK4001 HiFi Audio Hi-Res Beryllium PVD 5 Driver Hybrid Earphone - DK-4001 Now ₹85,567 at its 30-day median Lowest on record ₹85,495 on Friday, 16th Oct, 2026 In stock at 1 tracked store

HiBy x FAudio Project Ace JP Japan Version In-Ear Monitors IEM Earphone CM 2-Pin - 0.78mm CM 2-Pin / 3.5mm / 4.4mm Now ₹33,962 at its 30-day median Lowest on record ₹33,801 on Thursday, 22nd Oct, 2026 In stock at 1 tracked store

Price gap right now ₹51,605 60% of the dearer one's price.

Stores with it in stock 1 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 HiBy x FAudio Project Ace JP Japan Version In-Ear Monitors IEM Earphone CM 2-Pin - 0.78mm CM 2-Pin / 3.5mm / 4.4mm Lowest current price across all tracked stores - ₹33,962 vs ₹85,567.

Deepest discount ever seen HiBy x FAudio Project Ace JP Japan Version In-Ear Monitors IEM Earphone CM 2-Pin - 0.78mm CM 2-Pin / 3.5mm / 4.4mm From each product's own recorded price history.

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

Keep going

EQ preset: DUNU EQ preset: HiBy All IEMs More comparisons