In-ear

There must be hundreds of brands and thousands of models of in-ear monitors (IEMs) now, and probably 95 percent of them are as generic as 2x4s. But it’s obvious that a lot of thought went into the Rock-It R-30.

At the CanJam section of last fall’s Rocky Mountain Audio Fest, a manufacturer said something that’s resonated with me ever since. “The fit is the sound,” he told me, referring to the fancy new tips included with his company’s in-ear monitors. With that simple statement he summed up the reason why different listeners can have such different opinions of headphones. With IEMs, unless the tips seal well and the sound tubes fit properly within your ear canal, you’ll get little or no bass, and your treble and midrange will be out of balance at best and grossly uneven at worst.

Perhaps 50 feet away in the same ballroom, Phonak — the world’s largest manufacturer of hearing aids — showed me a way they’d come up with to address the fit problem with IEMs. The company’s Perfect Fit system employs L-shaped earpieces designed to conform to the folds of your pinna, allowing the body of the earpiece to reach further and more consistently into your ear canal for a better fit.

CES 2012 was the coming-out party for Sony’s in-ear headphones. Nearly buried in the talk of cell phones, media managers, and 3DTV was the announcement Monday night of Sony’s first line of balanced-armature in-ear monitors (IEMs). This step up to a higher class of product shocked me for two reasons.

After trying several Bluetooth headphones, I’m surprised this category hasn’t taken off yet. With Bluetooth, you’re unencumbered by pesky cables. You can leave your cell phone in your pocket, on a table, etc., and control volume and track forward/reverse wherever you roam, as long as you don’t stray further than 30 feet. And unlike almost all mic-equipped headphones, Bluetooth headphones work as well with Androids as they do with iPhones.