HeartField CU8 - 3.5MM vs 【TRI i ONE】High End 10MM

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:

vs

Open head-to-head

HeartField CU8 - 3.5MM heartfield Now ₹37,945 at Linsoul Lowest on record ₹396 on Wednesday, 4th Nov, 2026 ★★★★★ 4.6 4.6 · 5 reviews Full prices & history

【TRI i ONE】High End 10MM Carbon PET Diaphragm Dynamic Driver In Ear Monitors IEM - Silver / 3.5MM tri Now ₹16,937 at KeepHiFi Lowest on record ₹179 on Thursday, 5th Nov, 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 heartfield tri

Driver configuration — Dynamic (DD)

Driver size — 10–12mm

Impedance — 10Ω

Sensitivity — 108dB

Connectivity Wired Wired

Connector — 2-pin 0.78mm

Plug 3.5mm 3.5mm

Measured tuning, side by side

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

heartfield tri

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

Signal A B

Hear A Hear B

Your earphones / headphones

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 ±1.82 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 heartfield −1.0 dB Average level difference in this band, both curves aligned to their own 200 Hz–1 kHz mean. Plus means heartfield plays louder there on the measured files; minus means tri does.

Mids · 250–2,000 Hz heartfield +0.3 dB Average level difference in this band, both curves aligned to their own 200 Hz–1 kHz mean. Plus means heartfield plays louder there on the measured files; minus means tri does.

Treble · 2,000–10,000 Hz heartfield −1.3 dB Average level difference in this band, both curves aligned to their own 200 Hz–1 kHz mean. Plus means heartfield plays louder there on the measured files; minus means tri 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.

HeartField CU8 - 3.5MM Now ₹37,945 at its 30-day median Lowest on record ₹396 on Wednesday, 4th Nov, 2026 In stock at 1 tracked store

【TRI i ONE】High End 10MM Carbon PET Diaphragm Dynamic Driver In Ear Monitors IEM - Silver / 3.5MM Now ₹16,937 at its 30-day median Lowest on record ₹179 on Thursday, 5th Nov, 2026 In stock at 1 tracked store

Price gap right now ₹21,008 55% 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 【TRI i ONE】High End 10MM Carbon PET Diaphragm Dynamic Driver In Ear Monitors IEM - Silver / 3.5MM Lowest current price across all tracked stores - ₹16,937 vs ₹37,945.

Deepest discount ever seen 【TRI i ONE】High End 10MM Carbon PET Diaphragm Dynamic Driver In Ear Monitors IEM - Silver / 3.5MM From each product's own recorded price history.

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

Keep going

EQ preset: heartfield EQ preset: tri All IEMs More comparisons