Sleek Audio SA6 earphones review: Sleek Audio SA6 earphones

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3.5 stars

CNET Editors' Rating

The Good The Sleek Audio SA6 in-ear headphones offer rich detail in the low frequency range and a unique modular design that lets users tune the character of the sound quality to suit their tastes.

The Bad The modular design of the Sleek Audio SA6 means there are a lot of little parts to lose. For the price, we were hoping for better high-frequency clarity.

The Bottom Line The Sleek Audio SA6 earphones deliver above-average sound quality and an unprecedented modular design, but there are better earphones available in this price range.

7.0 Overall
  • Design 6.0
  • Features 8.0
  • Performance 6.0

Headphone newcomer Sleek Audio has introduced a new twist on high-end earphones. Their debut product, the SA6 in-ear headphones ($249) are the first set of earphones we've seen that allow you to customize treble and bass responsiveness by swapping interchangeable parts.

Design
The Sleek Audio SA6 earphones are lightweight and attractive, with a black-and-chrome aesthetic. Each set of SA6 earphones comes with a selection of three sizes of flanged silicone ear fittings and a detachable 4-foot cable that terminates in a gold-plated 3.5mm jack. Also included is a plastic clamshell case for storing the SA6 earphones, which we found to be more attractive than functional.

Features
If the Sleek Audio SA6 earphones have a claim to fame, it's their modular approach to tuning the treble and bass response to your taste. While the Sleek Audio SA6 earphones work great right out of the box, three pairs of interchangeable Treble Tips and Bass Ports are included with the package, allowing you to increase or decrease the perceived amount of low end or high end for each ear. Be warned, you do have to be fairly nimble-fingered to swap out these tiny parts, but once you've configured your perfect recipe for audio bliss, you probably won't need to revisit the tiny parts again.

Another distinguishing feature found on the Sleek Audio SA6 earphones is their detachable cable design. The included headphone cable connects to the SA6 earpieces using a miniature, gold-plated coaxial jack found in the back or the earpiece. This detachable cable design not only makes it easy to replace broken cables, but the use of a rotatable coaxial connection makes it easier to position the cable around the ear. The downside to all these detachable parts, of course, is that there's approximately nine little parts to lose at any given moment.

Performance
We listened to a variety of music using the Sleek Audio SA6 earphones configured in multiple ways, and the overarching sonic character was a dip in the high-mid range. Vocals felt a little buried in the mix of songs such as Sia's live performance of "Blow it All Away" and such instruments as pianos, horns, and strings generally felt a little muted. On the low-end, the Sleek Audio SA6 earphones really shined. Low frequency instruments such as bass, keyboard and kick drum really punched through, especially in classic studio recordings such as Stevie Wonder's "Too High."

For a single balanced-armature driver housed in an extremely small and lightweight earpiece, we thought that the sound quality of the Sleek Audio SA6 earphones was impressive. For $250, however, we have a short list earphones in this price range that we prefer, including Shure's SE310, Ultimate Ears' Super.fi 5 Pro, and the ugly duckling Future Sonic Atrio M5. While we applaud Sleek Audio for creating an innovative design that gives users better control over customizing their experience, the final results were sonically mediocre when held up to the competition. Also, all the tiny, fragile, detachable components involved in the SA6 earphones didn't inspire the confidence we wanted in a road-worthy product.

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