Call quality remains succinct and accurate enough, with my voice registering clear and crisp. Specifications Vocals and instrumentation both benefit from this clean and precise presentation. Slightly forward leaning, the mids in the CX 300S offer a refreshing alternative to a v-shaped sound profile. The result is an ample and full sound that seems equally well suited to any genre – but one that abounds with an impressive amount of resolution for the price. High End Slightly smoothed highs prevent the sound from ever becoming too bright or harsh. Of course, in the highest highs, the CX 300S can feel a little intense. But during most of my listening sessions, I was too busy enjoying the overall sound to notice these tiny and infrequent hiccups. Like the lows and mids, the highs abound with detail, and it’s all too easy to get lost in your favorite music with this tiny earphone. Soundstage Accessories-wise, the CX 300S might seem a little light. Included with the earphones, you’ll find four pairs of silicon eartips and a soft carrying pouch. The earphones themselves feel lightweight but solid, with an air of durability that reminds me of the long-reigning Sennheiser HD1 In-ear. Cabling comes in the form of a no-tangle, elliptical design, replete with an in-line mic and remote. The whole affair measures a standard 4 ft (1.2 m) and terminates in a right-angled 3.5 mm plug.

Featuring a fairly run-of-the-mill earbud design, the housings feature a slight angle, allowing for an ergonomic and comfortable fit. Honestly, I could wear these all day without feeling a thing, and the sound definitely merits that consideration.