You might know 64 Audio as one of the best -- and most expensive -- IEM makers in the game. And while they're known best for their $2,000+ IEMs, they've been releasing more affordable models, including this U4s. And after over a month listening to it, I gotta say it's one of their best. See the 64 Audio U4s on Squiglink: https://squig.link/?share=Super_22_Target,64_Audio_U4s_(m20) 00:00 Intro & Pricing 01:45 What's in the box 05:05 Build quality 07:05 Fit & comfort 09:30 Sound signature 11:45 Sound: What I like 14:10 Sound: What I don't 16:10 vs. Nio, Monarch mk2, and Supernova 25:25 Conclusion & Rating On Headphones.com: https://headphones.com/products/64-audio-u4s-in-ear-headphones On 64audio.com: https://www.64audio.com/products/u4s ---------- - Join the Super* Discord: https://discord.com/invite/ZBpXZnp - Super* merch here: https://super-review-merch.myteespring.co/ - Follow me on Instagram: https://www.instagram.com/fakesuperreview Disclosure: This video is NOT sponsored, but 64 Audio did send these earphones to me on loan for review. Check them out at https://www.64audio.com/ Music by Birocratic. Check him out on Soundcloud: https://soundcloud.com/birocratic #64audio #IEMs #earphones #headphones #audio #audiophile #SuperReview