KZ - ZSN Pro X - Black / 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.

KZ - ZSN Pro X - Black / With Mic KZ Now ₹1,949 at Headphone Zone At its lowest recorded price ★★★★☆ 4.4 4.4 · 803 reviews Full prices & history

EarAcoustic Audio SPA-Hi End Series 11.4mm Dynamic Driver IEMs tfz Now ₹14,241 at HiFiGo Lowest on record ₹14,179 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 KZ tfz

Driver configuration — Dynamic (DD)

Driver size — 10–12mm

Impedance 25Ω —

Sensitivity 112dB —

Connectivity Wired Wired

Microphone With mic —

Connector 2-pin —

Plug 3.5mm —

Measured tuning, side by side

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

KZ tfz

Tuning distance ±0.93 dB RMS 94% match - Near identical. 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 KZ −0.2 dB Average level difference in this band, both curves aligned to their own 200 Hz–1 kHz mean. Plus means KZ plays louder there on the measured files; minus means tfz does.

Mids · 250–2,000 Hz KZ +0.1 dB Average level difference in this band, both curves aligned to their own 200 Hz–1 kHz mean. Plus means KZ plays louder there on the measured files; minus means tfz does.

Treble · 2,000–10,000 Hz KZ −0.2 dB Average level difference in this band, both curves aligned to their own 200 Hz–1 kHz mean. Plus means KZ 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.

KZ - ZSN Pro X - Black / With Mic Now ₹1,949 Lowest on record ₹1,949 on Wednesday, 14th Oct, 2026 In stock at 1 tracked store

EarAcoustic Audio SPA-Hi End Series 11.4mm Dynamic Driver IEMs Now ₹14,241 at its 30-day median Lowest on record ₹14,179 on Thursday, 22nd Oct, 2026 In stock at 1 tracked store

Price gap right now ₹12,292 86% 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 KZ - ZSN Pro X - Black / With Mic Lowest current price across all tracked stores - ₹1,949 vs ₹14,241.

Deepest discount ever seen KZ - ZSN Pro X - Black / With Mic From each product's own recorded price history.

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

Keep going

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