KZ - ZSN Pro X + FiiO - BTR11 - Black / Black vs EarAcoustic Audio SPA-Hi End Series 11.4mm Dynamic Driver IEMs

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 + FiiO - BTR11 - Black / Black KZ Out of stock at every tracked store Lowest ever ₹3,799 on Saturday, 12th Sept, 2026 Full prices & history

EarAcoustic Audio SPA-Hi End Series 11.4mm Dynamic Driver IEMs tfz Now ₹14,534 at HiFiGo Lowest ever ₹14,327 on Sunday, 13th Sept, 2026 Full prices & history

Measured tuning, side by side

Both curves are real community measurements (gold: KZ - ZSN Pro X + FiiO - BTR11 - Black / Black · ink: EarAcoustic Audio SPA-Hi End Series 11.4mm Dynamic Driver IEMs). Each is level-aligned to its own 200 Hz–1 kHz mean, so rig offsets don't skew the comparison.

KZ - ZSN Pro X + FiiO - BTR11 - Black / Black EarAcoustic Audio SPA-Hi End Series 11.4mm Dynamic Driver IEMs

Tuning distance±0.93 dB RMS94% 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.

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.

The decision, factually

Cheaper right nowEarAcoustic Audio SPA-Hi End Series 11.4mm Dynamic Driver IEMsLowest current price across all tracked stores.

Deepest discount ever seenKZ - ZSN Pro X + FiiO - BTR11 - Black / BlackFrom each product's own recorded price history.

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