Sennheiser CX 300 headphone review: Sennheiser CX 300 headphone

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CNET Editors' Rating

3.5 stars Very good
  • Overall: 7.3
  • Design: 7.0
  • Features: 7.0
  • Performance: 8.0

Average User Rating

2 stars 4 user reviews
Review Date:
Updated on:

The Good The Sennheiser CX 300 offers solid sound quality, significant isolation from outside sounds, and an ultralightweight design, as well as three sizes of silicon ear tips to ensure a perfect fit--all for well less than $100.

The Bad The Sennheiser CX 300 doesn't come with a travel pouch or any other accessories.

The Bottom Line If you're looking for an affordable, decent-sounding pair of earbuds, start with the Sennheiser CX 300. Sennheiser's first in-ear design sounds like a winner to us.

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Sennheiser CX-300

We've conducted an informal poll on the streets of New York City, and from that vantage point, it looks like 80 percent of iPod-toting denizens are using the pathetic earbuds that came with their players. Shure and Etymotic's in-ear headphones are surefire cures for the bad-sound blues, but their teensy in-ear models all come with hefty price tags, with the very cheapest starting around $100. Sennheiser's new American division saw an opening and introduced this nifty $80 in-ear model, the CX 300, which you can actually find for around $60 online.

The Sennheiser CX 300's construction quality exceeds that of most earbuds, and the soft and flexible Y cable is a good length at 49 inches. The CX 300--available in black or silver finishes--doesn't come with the usual accessories, such as a travel pouch or an airline plug-in adapter that you get with the higher-priced models.

Like all the in-ear phones we've tested, the Sennheiser CX 300 won't produce any bass at all unless its soft silicon ear tips form an airtight seal inside your ear canals. That might require a little experimentation, having to switch between the CX 300's three sizes of ear tips. We settled on the largest ones, but the fit was never as secure as we've achieved with other in-ear phones, and a slight tug on the CX 300's cables would dislodge the earpiece from the ear. To evaluate the CX 300's noise isolation, we took a trip on the 4 train on New York City's subway, where the CX 300 proved itself to be an effective noise blocker, almost on a par with the higher-priced in-ear models. The isolation won't make them a safe choice for joggers, plus we heard a significant amount of rustling from the CX 300's wires rubbing against our clothing whenever we moved about.

We directly compared the Sennheiser CX 300 to Etymotic's ER-6i ($150) in-ear headphones and came away impressed with the little Sennheisers. First thing, the CX 300's bass went as deep as the ER-6i's, but the vocals and guitars on Ryan Adams's mostly acoustic new CD, 29, were noticeably less "canned" and hollow-sounding on the ER-6i. The CX 300 rocked out with a live version of the Rolling Stones's "Start Me Up," and the band's power and grit were all there; the headphones definitely played loud enough when paired with our iPod.

Sennheiser's off to a good start, but the CX 300's sound is nowhere as clear and open as that of our favorite Shure and Etymotic models.

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Where to Buy See all prices

Sennheiser In-Ear Stereo (Black)

Part Number: 3312931
MSRP: $49.95 Low Price: $121.59 See all prices

Quick Specifications See All

  • Color black
  • Weight 0.1 oz
  • Sound Output Mode stereo
  • Type headphones
  • Headphones Form Factor ear-bud
  • Connector Type mini-phone stereo 3.5 mm