Almost all mic-equipped canalphones that can be had for about $100 use moving-coil drivers to produce sound, as is the case with all the previous IEMs in this review series. But the Ultimate Ears 600vi ($120) are different — this set employs a single tiny armature in each ear. Armatures generally allow for a more neutral sound with better definition than their moving-coil brethren, and that’s exactly the case with the 600vi. In fact, this set uses pretty much the same excellent drivers as in the now-discontinued, $180 SuperFi 5vi we reviewed early last year.
And yes, apart from the V-Moda Vibrato, the 600vi is $20 more than the other earphones in this review series — but we think the extra Jackson is worth it..