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KZ ZSN Pro X · Navy Blue — IEM
KZ

KZ ZSN Pro X · Navy Blue

IEM

74
/ 100
From $25
VS
Bose QC45 wins by 14
Bose QC45 — Over-ear · 2021
Bose

Bose QC45

Over-ear · 2021

88
/ 100
From $329
Specdex verdict

Bose QC45 takes it — here’s why.

In our weighted Specdex score, KZ ZSN Pro X · Navy Blue lands at 74 and Bose QC45 at 88. That puts Bose QC45 ahead by 14 points — a decisive margin driven mostly by its strengths in the categories below.

Pick KZ ZSN Pro X · Navy Blue if…

  • ✓Reference-level detail
  • ✓Well-regarded in audiophile community
  • ✓Long-term ownership appeal

Pick Bose QC45 if…

  • ✓Flagship comfort + ANC on modern models
  • ✓Premium build
  • ✓Active noise cancellation (most models)
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Winner by scenario

Derived from the sub-score breakdown · not a separate test

Sound quality

Bose QC45

Tuning, detail, and staging

Bose QC45 leads on sound (88 vs 74).

Noise cancelling

Bose QC45

ANC strength for commute and travel

Bose QC45 leads on anc (86 vs 0).

Comfort

Tie

Long-session wearability

Effectively tied — neither pulls a 2-point weighted lead.

Value for money

KZ ZSN Pro X · Navy Blue

Specdex score per dollar at MSRP

KZ ZSN Pro X · Navy Blue more score per dollar ($25 vs $329).

KZ ZSN Pro X · Navy Blue 74
vs
88 Bose QC45

Score breakdown

KZ ZSN Pro X · Navy Blue
74
anc 0
sound 74
comfort 88
battery 100
features 50
Bose QC45
88
anc 86
sound 88
comfort 87
battery 82
features 84

Specs side-by-side

KZ ZSN Pro X · Navy Blue versus Bose QC45 — full spec comparison
Spec KZ ZSN Pro X · Navy Blue Bose QC45
Type
IEM
Over-ear
Release year
—
2021

KZ ZSN Pro X · Navy Blue

Pros
  • +Reference-level detail
  • +Well-regarded in audiophile community
  • +Long-term ownership appeal
Cons
  • −Requires amplifier (most)
  • −No active noise cancellation
  • −Impractical for commuting

Bose QC45

Pros
  • +Flagship comfort + ANC on modern models
  • +Premium build
  • +Active noise cancellation (most models)
Cons
  • −Battery varies by codec
  • −Some are Bluetooth-only
  • −Price creep vs previous gen

FAQ: KZ ZSN Pro X · Navy Blue vs Bose QC45

Which is better, KZ ZSN Pro X · Navy Blue or Bose QC45? +

Bose QC45 scores 88 on our weighted rubric — ahead by 14. Your best pick depends on the sub-scores above.

Is KZ ZSN Pro X · Navy Blue worth the price? +

At $25, KZ ZSN Pro X · Navy Blue delivers a Specdex score of 74 — strongest in battery.

Is Bose QC45 worth the price? +

At $329, Bose QC45 delivers a Specdex score of 88 — strongest in sound.

Does KZ ZSN Pro X · Navy Blue or Bose QC45 last longer? +

Based on our long-term update and support ratings, both ship with multi-year support. Battery and reliability scores are visible in the breakdown above.

Which is better for sound quality, KZ ZSN Pro X · Navy Blue or Bose QC45? +

Bose QC45 — leads on sound (88 vs 74). Tuning, detail, and staging.

Which is better for noise cancelling, KZ ZSN Pro X · Navy Blue or Bose QC45? +

Bose QC45 — leads on anc (86 vs 0). ANC strength for commute and travel.