Average Reviews:
(More customer reviews)The white wires suggest Etymotic Research wants a bigger piece of the iPod upgrade market. But rather than simply giving the black-wired ER-6 a cosmetic makeover, they designed the ER-6i from the ground up to work around portables' puny output. Thus, they offer higher sensitivity (more sound for a given volume setting) and boosted bass response.
But despite their light weight and sporty appearance, these phones are optimized for home listening, commuting, and plane trips; applications where sound isolation is a benefit, not a hazard. Compare them, therefore, to active noise-canceling headphones, not conventional earbuds.
FIT & COMFORT
Because these phones go in your ear canal and require an airtight seal, proper fit is essential. Without it, you will get no bass at all. None. I prefer the disposable foam ear tips to the 3-flange ones (both kinds are included). Your results may vary.
Here's the trick: After you compress the foam and insert them in your ears, it takes several seconds for the foam to expand. Focus on available background noise. When the sound drops suddenly over a second or two, you know a seal has been formed. Conversely, with music playing, you should notice the sound suddenly fill out, first in one ear and then the next.
The foam ear tips may feel uncomfortable for 2-3 minutes, but you quickly get used to them. This naturally depends on ear geometry and other factors, but be aware that you wouldn't buy these phones on comfort alone.
SOUND DAMPING
Properly inserted, the foam ear tips provide 34-36 dB noise reduction (the triple flanged ear tips are a few decibels less effective). To put this in perspective, this is even better than the 29-31 dB NRR (Noise Reduction Rating) provided by better-quality shooting ear muffs. They also quiet more than active noise canceling headphones (which feature feedback circuitry that noticeably degrades the sound).
With this level of damping, you may be aware that a TV is on in the same room, but just barely. You will also save your hearing because you won't feel the need to turn up the volume to drown out environmental noise.
The downside of this isolation is that you will miss doorbells, telephones, etc. Common sense argues strongly against using these jogging, bicycling, or even walking around city streets. You're giving up a sense entirely. The "look out, you idiot" you don't hear could be the "look out, you idiot" you absolutely, positively needed to hear.
SOUND QUALITY
Putting these phones through their paces with music I'm familiar with, the first thing that stood out was their neutral-to-bright balance. These are slightly more "forward" sounding than the more "laid back" or "polite" German headphones you might think of.
The second thing I noticed was that they get the midrange right. Without the response peaks, valleys or ripples that so often mar the critical 1,000 Hz. region, you will hear singers sound more "present" than with the vast majority of headphones (and most audiophile speakers for that matter).
If you are a bass junkie, you will find the bass lean. This is difficult to say, but it's not the headphones. It's you. You are addicted to heavy one-note bass (it's an epidemic - note how rental cars always have the bass at +10). Go cold turkey and listen with these for a week, however, and you will discover that there are actually, ahem, different bass notes.
As for treble, there are conventional open headphones (usually more expensive) with more "air" at the top end, but the ER-6i's treble extension is as good as sound-isolating headphones go - certainly better than the Bose. There's a minor response notch at 7 kHz, but nothing I really noticed.
BTW, don't be alarmed by their funny-looking frequency response curve. Remember, because they're in your ear, they are voiced to compensate for the missing frequency shaping ordinarily provided by your outer ear.
The sound damping has another beneficial effect: You will hear things in familiar recordings you have never heard before, even with high quality open headphones. Not just fingers over guitar strings, but sounds way, way down in the mix.
DESIGN & BUILD
These fingernail-sized phones are white with transparent side panels that reveal wires and the metal flanks of their balanced armature transducers. There is a small port topside, presumably for audio tuning, but perhaps also to reduce negative pressure caused by yanking the phones out (not a good idea - always remove them slowly). The front-facing side has the model number with a red dot separating the ER and 6i. The backs feature an oversized L and R, just like your first pair of sneakers.
The wires are lightweight, which is a more important factor on canal phones than with ear buds that allow the outer ear to bear the weight. The cord is a bit longer than some joggers might like, but then again, you shouldn't be using these jogging. The 1/8" headphone jack termination is gold-plated for long-term corrosion-resistance.
The removable shirt clip (included) should be used when practicable to avoid the sudden pressure on your eardrums that might result from yanking them out.
CONCLUSION
The ER-6i offers exceptionally involving, neutral sound for the money, with accurate bass and a commendably smooth midrange. I am also not aware of any headphones that provide better isolation from environmental noise. Recommended.
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