64 Audio’s most popular CIEM now available in a universal form. Drawing from the sonic palette of U12t, U6t is our most affordable audiophile monitor to date.

Boasting the same groundbreaking technology as our flagship IEMs in our ergonomic aluminum shell to make it more accessible than ever. While looking towards U12t for sonic inspiration, the U18s influenced the new dark grey matte shell finish as well as its newly redesigned packaging and proprietary cable.

The understated shell design and classic black faceplate reflect what you can expect from the new generation of 64 Audio’s audiophile products.

Our first high driver-count hybrid UIEM featuring a 9mm dynamic driver and 8 balanced armature drivers. The drivers and other patented components are housed in an ergonomic shell machined out of solid aluminum.

Similar to some of our other unique faceplates, Nio is finished with a naturally sourced striking blue abalone faceplate making each pair truly unique.

With a sound signature characterized by extended lows and a rich 3-dimensional soundstage, Nio’s smooth treble and natural warmth will provide hours of enjoyable listening for all genres of music.

With the included variety of tips and apex modules you can take Nio from a saturated tube-like warmth all the way to a neutral reference monitor tonality.

10-driver hybrid UIEM, building on the heritage of Nio. Featuring two new custom 9mm dynamic drivers in a True Isobaric configuration, delivering unprecedented low-frequency capability. An innovative waveguide optimizes our tia™ high-driver's efficiency while offering greater tuning control. The six low-mid and single high-mid evoke a similar analog warmth found in Nio, while the highs propel it into the territory of some of the most resolving audio products in the world.

The U12t does it all, delivering immersive sound and impeccable spatial imaging. It's clean highs extend beautifully with a warm and engaging low-end response - just like its custom counterpart, the A12t.

Offering reference-level detail, this IEM has become one of the most highly regarded and sought after audiophile UIEMs. Each ergonomic shell is machined out of a solid piece of aluminum and finished with an elegant brushed aluminum faceplate.

Trio is a three driver fully-tubeless hybrid Universal In-Ear Monitor (UIEM). An audiophile UIEM in the sweet spot between reference-level clarity and a smooth sound signature perfect for extended listening.

Each ergonomic Trió shell is machined out of solid aluminum. The internal chambers are precisely milled in order to house the tubeless drivers and shape their sound. Its understated neutral color palette is topped off with an elegant brushed aluminum faceplate.

One of our fully tubeless UIEMs Trió features our patented tia technology, integrated patented apex pressure relief, and patented LID circuitry.

Trió relies on the Frequency eXtension Chamber (FXC) for superior mid-range control. The air volume of the back-vented dynamic driver is precisely controlled, delivering perfectly placed mid frequencies, giving vocals and instruments a remarkably natural sound.

Packed with an unbelievable 18 balanced armature drivers per side, U18t is our top-of-the-line reference in-ear monitor. This industry-first design sits right at the boundary of what is physically possible in a UIEM.

Released and developed alongside Fourté in 2016 it is the first IEM to integrate our patented tia technology with conventional IEM design, utilizing the tia high driver and single sound bore. This astonishingly complex system results in incredible detail, extension, and unmatched clarity across all frequencies.

U18t achieves its quick bass response, while retaining enough sub-bass amplitude, by coupling eight modified mid-drivers for the low frequency band rather than using fewer/larger drivers. Another eight low-mid drivers are required to match that amplitude in the mids. The one high-mid + one tia high driver combination became the basis for 90% of our entire product range.

The extremely accurate response of U18t makes it perfect for critical audiophile listeners as well as mixing and mastering engineers. Each ergonomic shell is machined out of solid aluminum, anodized red, and finished with an elegant copper-patinated inlay on the faceplates.

64 Audio revolutionized the IEM industry in 2016 with its world class reference level U18t, the world's first 18-driver earphone. Now, with the introduction of U18s, 64 Audio has taken the heritage of the 18 driver platform and further pushed the envelope of innovation in sound and design.

U18s combines proprietary drivers, LID technology and a new electronic crossover network to deliver a uniquely exceptional listening experience.

U18s is handcrafted in the USA from aerospace-grade aluminum billet. CNC milled, sand blasted, fly cut, and twice anodized - the result is a striking fractal design that is inspired by nature itself.

Fourté is the pinnacle of in-ear monitor technology. With its entire design being made up of industry firsts, Fourté isn’t just a four driver hybrid UIEM. The innovations of acoustically shaping micro-chambers, direct radiating drivers, and the single sound bore come together in our patented tia technology.

Fourté is our first IEM to feature internally integrated patented apex technology. These along with its ergonomic shell, machined out of solid aluminum, have dictated our entire UIEM design language since its development in 2016.

The black anodized aluminum shell is topped off with a copper color anodized aluminum faceplate and a beautifully aged copper faceplate chip; each one developing a truly unique patina pattern making sure that no two Fourté are alike. Fourté’s unique drivers, acoustic chambers, integrated apex technology and passive radiator all unite delivering an unrivaled sonic experience.

The level of detail retrieval coupled with its “out-of-head” sound-stage and deep reaching bass reanimate well-recorded music; putting its resolving capabilities at the level of some of the worlds greatest audiophile systems.