Uploaded February 2026 | Updated September 2026, 4 days ago

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We're all in this for the sound quality. We're all looking for the headphones and IEMs that scratch that itch that only we, individually, can validate. So is "sound quality" just some magical property beyond the reach of human measurement?

No, I think that's silly. I think it's just complicated. This is what "sound quality" really is.

Thanks to Juzear for sponsoring this episode of Wave Guide.
- See the all of Juzear's IEMs: hifigo.com/collections/in-ear?filter.p.vendor=JUZEAR&rfsn=8539789.379f98

00:00 Intro
00:48 Scope
03:00 Frequency range
08:25 Distortion
10:58 Frequency response
15:48 Wrap-up

Read the Rtings article about distortion audibility here: rtings.com/headphones/learn/research/distortion-audibility-listening-tests

Also watch:
- youtube.com/watch?v=Lb7luw70bU4
- youtube.com/watch?v=IiA4WfOp_QM
- youtube.com/watch?v=HDR9QUj0rFM
- youtube.com/watch?v=Ph9gY7PE2kg
- youtube.com/watch?v=CdHOji8FeUg

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Juzear Harrier
- HiFiGo: hifigo.com/products/juzear-harrier?rfsn=8539789.379f98
- Squiglink: squig.link/?share=Harman_Adjusted_Target,Super_22_Target,IEF_Comp_Target,Juzear_Harrier

Juzear x Z Reviews Defiant
- HiFiGo: hifigo.com/products/juzear-x-z-reviews-defiant?rfsn=8539789.379f98
- Squiglink: squig.link/?share=Harman_Adjusted_Target,Super_22_Target,IEF_Comp_Target,Juzear_Defiant

Juzear 41T
- HiFiGo: hifigo.com/products/juzear-41t?rfsn=8539789.379f98
- Squiglink: squig.link/?share=Harman_Adjusted_Target,Super_22_Target,IEF_Comp_Target,Juzear_41T

Juzear 61T
- HiFiGo: hifigo.com/products/juzear-butterfly-61t?rfsn=8539789.379f98
- Squiglink: squig.link/?share=Harman_Adjusted_Target,Super_22_Target,IEF_Comp_Target,Juzear_61T

Juzear 81T
- HiFiGo: hifigo.com/products/juzear-81t?rfsn=8539789.379f98
- Squiglink: squig.link/?share=Harman_Adjusted_Target,Super_22_Target,IEF_Comp_Target,Juzear_81T

FYI: I may get commissions for purchases made through links in this post.

And follow Juzear on...
- Facebook: facebook.com/juzearaudio
- X: https://x.com/juzearaudio

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- Join the Super* Discord: discord.com/invite/ZBpXZnp

- Super* merch here: shop.squig.link

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Disclosure: This video IS sponsored by retailer Juzear. Check them out at juzearaudio.com

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#audiophile #hobby #WaveGuide #headphones #IEMs #audio #SuperReview #audiophile