CRI-400 Earbuds

The brand new CRI-400 Earbuds are the best you’ll find in high resolution sound with an extra wide frequency response range…and amazing fit! They were custom-designed to our rigorous standards and are compatible with all Deeper Levels of the Holosync Solution. CRI-400s include multi-control buttons, 6 sets of ear tips and a CRI carrying pouch.

For iPhone users who need a headphone jack adapter: Apple Lightning to 3.5 mm Headphone Jack Adapter.FREE with your purchase of Headphones and CRI-400 Earbuds. Call Support at 503-672-7117 from 9:00am to 4:30pm (PST) Monday-Friday. Or email us at

Now Let’s Talk About FIT

Because we want you to be nothing-less-than THRILLED, our new CRI-400s are designed with a special ergonomic 45º angle. They not only fit your ears naturally…

…but also provide immaculate noise isolation.

Plus, you get SIX different sets of ear tips–in small, medium and large versions of both memory foam and soft rubberized silicone–that enable you to…

…have the perfect, failsafe fit and feel for YOUR ears.

What Customers Say

"I've worked in audio production and design for over twenty years and I can tell you that it's very rare to find earbuds this good. The sound is crisp, clear, and the lows are very solid and exceptionally well-balanced. Nothing else in this price range comes even close to matching the quality and comfort of the CRI-400s."

— J. Reid

Our Guarantee to You

The CRI-400s are fully covered by a two-year warranty against defects. If they break under normal wear-and-tear within two years, send them back and we’ll ship you another brand new pair at no cost.

CRI-400 Earbuds


High Resolution Earbuds: Crystal clear, balanced, powerful sound

Frequency Response: 5Hz–40kHz: Exceptional sound range

Multi-control Buttons: Control volume, playback and phone

6 Sets of Ear Tips: For the best fit and feel for YOU

CRI Carrying Pouch: Easy to tuck away and carry

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