Harman's latest offering, set to hit the States in October, is the AKG K390 Infinity Noise-Canceling earphones. This in-ear model features a double-whammy of passive sound isolation and active noise cancellation, making it a tempting option for commuters and frequent fliers. But at $249, these earphones are far from cheap, and buyers should be wary of potential fit issues, as comfort is key for any extended-wear scenarios.
The earbuds are slightly larger than average and feature an external port (for more airflow, we assume) and a reinforced cable connection for durability. Like the 'buds, the sound apertures are on the large side, which caused some discomfort for us during testing no matter which eartips we used.
There's no getting around the fact that the K390's noise cancellation module is rather hefty in both size and weight. Luckily, AKG built in a shirt clip to alleviate concerns raised by the latter (so the earbuds are not pulled out of the ear by the weight).
However, the module measures almost 3 inches across and it's an inch tall and a bit more than 0.5 inch deep, so it's definitely not the most inconspicuous thing to have attached on your person. The top edge of the unit houses an on/off switch for the noise-canceling feature as well as a mute button that allows you to hear what's going on around you without removing the earbuds.
It's nice that the cord is detachable as this provides a more clutter-free method for useing the noise cancellation as a standalone feature (on an airplane, for example). Still, we'd expect better overall audio quality from a $250 set of earphones, and the K390s just don't deliver.