Uploaded May 2026 | Updated September 2026, 3 days ago

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Are some headphone and IEM drivers faster than others? The answer... depends on what exactly you mean by "fast." People often ask me about driver speed and CSD graphs, and to be honest I didn't know much about them. So I dug into the data -- and I've got a lot of it.

Subscribe to Craig, he's smarter than me and has more detached human ears 👉 youtube.com/@celstark/videos

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
02:21 What "fast" sound means
04:51 CSD graphs
12:34 Audience survey result
15:26 Square waves
21:26 How to measure "speed"
23:39 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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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