Altec Lansing inMotion iM716 Portable HD Audio System
 

Noise isolating earphones may seem like a simple idea; the combination of noise-blocking earplugs with earphones seems natural. However only recently has this idea been brought to the market by market leaders, Etymotic Research. Altec Lansing has collaborated with Etymotic to produce its own flavor of noise isolating earphones. Here’s how they stack up against Etymotic’s own offerings.