NF ACOUS - NM20 - Blue vs EarAcoustic Audio SPA-Hi

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.

NF ACOUS - NM20 - Blue nf Now ₹7,499 at Headphone Zone At its lowest recorded price Full prices & history

EarAcoustic Audio SPA-Hi End Series 11.4mm Dynamic Driver IEMs tfz Now ₹14,179 at HiFiGo 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 nf tfz

Driver configuration — Dynamic (DD)

Driver size — 10–12mm

Connectivity Wired Wired

Measured tuning, side by side

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

nf tfz

Tuning distance ±1.56 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 nf +0.4 dB Average level difference in this band, both curves aligned to their own 200 Hz–1 kHz mean. Plus means nf plays louder there on the measured files; minus means tfz does.

Mids · 250–2,000 Hz nf −0.2 dB Average level difference in this band, both curves aligned to their own 200 Hz–1 kHz mean. Plus means nf plays louder there on the measured files; minus means tfz does.

Treble · 2,000–10,000 Hz nf +1.7 dB Average level difference in this band, both curves aligned to their own 200 Hz–1 kHz mean. Plus means nf plays louder there on the measured files; minus means tfz 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.

NF ACOUS - NM20 - Blue Now ₹7,499 at its 30-day median Lowest on record ₹7,499 on Saturday, 12th Sept, 2026 In stock at 1 tracked store

EarAcoustic Audio SPA-Hi End Series 11.4mm Dynamic Driver IEMs Now ₹14,179 1% below its 30-day median Lowest on record ₹14,179 on Thursday, 22nd Oct, 2026 In stock at 1 tracked store

Price gap right now ₹6,680 47% 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 NF ACOUS - NM20 - Blue Lowest current price across all tracked stores - ₹7,499 vs ₹14,179.

Deepest discount ever seen NF ACOUS - NM20 - Blue From each product's own recorded price history.

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

Keep going

EQ preset: nf EQ preset: tfz All IEMs More comparisons