In a market polarized by shockingly-good IEMs for under $50 and flagship behemoths for $6,000, maybe there's new space in between for an IEM with fewer drivers and a semi-reasonable price point, if they can nail the tuning? Precogvision takes a look.

Read the in-depth review:
[ Ссылка ]

Join our Discord server:
[ Ссылка ]

Headphones.com Reviews:
[ Ссылка ]

Measurement Index
[ Ссылка ]

How to read headphone measurements
[ Ссылка ]

How to EQ Headphones
[ Ссылка ]

The Limits of EQ
[ Ссылка ]

Learn about headphone measurements and frequency response: [ Ссылка ]

Other IEM comparisons around $1K:

Sony IER-M9 - This IEM has warmer, more blobby mid-bass and more a mid-treble emphasis at around 9kHz. The U4s will sound more energetic and sharp, especially moving into the upper-treble. Generally, the IER-M9 might be considered the safer listen; however, it's also quite boring.

Symphonium Helios - Helios is a foremost a technical IEM. It will best the U4s especially when it comes to the crispness of notes thanks to its 200Hz recession and nearly linear treble response. Transients on the Helios are quite "BA" like in the sense that they are snappy and sharp. For listeners who want a warmer listen and more natural timbre, though, the U4s is the better play. The Helios is also quite large and lacks venting which should be a consideration for listeners concerned about comfort.

Moondrop S8 - Pretty much the opposite of the U4s, the S8 falls much closer along the lines of the Monarch MKII which I covered in the video. Go for this IEM if you want snappy, clean transients and in-your-face vocals. Go for the U4s if you want something more colored, warm, and unique sounding. No venting on the S8 if comfort is a consideration.

0:00 Intro & Tangibles
3:20 The 64A Nio
4:32 Tuning of the U4s
6:46 Technicalities & 64A Comparisons
9:23 Monarch MKII Comparison & Conclusion

свернуть