Uploaded March 2026 | Updated September 2026, 4 days ago

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I try not to get too caught up in driver memes, but I'd be lying if I said I wasn't interested in new tech. And Binary's new EP321-MEMS has got the "world's first" direct-drive MEMS driver, which is genuinely interesting. But does it actually make the EP321 better? Only one way to find out.

See the Binary EP321-MEMS on...
- Squiglink: squig.link/?share=Harman_Adjusted_Target,Super_22_Target,IEF_Comp_Target,Binary_Acoustics_EP321-MEMS
- Amazon: amzn.to/4cZK4di
- AliExpress: https://s.click.aliexpress.com/e/_c3WvPJPd

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

00:00 Intro
03:10 Build quality
07:25 Fit & comfort
09:30 Sound quality
14:15 vs. Performer 8S
15:35 vs. Volume S
17:40 vs. Blessing 3
20:00 Conclusion & Rating

Thanks to @Precogvision for loaning me his EP321 to review. Check out his IEM reviews at youtube.com/@Precogvision

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#Binary #MEMS #IEMs #headphones #audio #audiophile #SuperReview