We recently looked at the highest-end model in the Klipsch Custom series -- the Custom-3s. At £150 these might be a little out of your range, so Klipsch has introduced the more affordable Custom-2s.
The Custom-2s are on sale for around £100 and sit in the middle of the Custom earphone range.
Design
Consistent with the entire line of these new Klipsch earphones, the Custom-2s conform to the pseudo-triangular design we saw in the Custom-3s. Their lightweight enclosures are very well built and play host to the feature that gives the earphones their 'Custom' name: memory wire.
This wire can be bent like a pipe cleaner, and it stays rigid in whatever shape it's bent into, allowing you you twist it over the back of your ear to ensure a comfortable and 'custom' fit. It's not a feature we're particularly fond of, but some people will, particularly if you intend on moving around or taking exercise while wearing the 'phones.
In the box is a range of silicone tips, both tradition sound-isolating sleeves and double-flanged versions. Experimentation is the key to getting the right fit, and we found them, like the Custom-3s, to be the earphones we struggled with most to get a comfortable seal. When you achieve it, however, they're pretty comfy and offer excellent sound-isolation.
Interestingly, we found sound-isolating tips from competing manufacturer Shure fit the Custom-2 perfectly, and offered improved fit. Not everyone will experience this -- your ears may vary -- but if you discover yourself having trouble, it's worth trying tips from Shure.
Features
Inside each enclosure are dual armatures, similar in design, but with one incorporating an acoustic low pass filter to help smooth the mid-range. What this means to the layman is that two tiny speakers inside each earpiece are driving sound into your ears.
Sending audio to these armatures is a fairly thin, cloth-encased cabling, connected to a gold-plated 3.5mm plug. Sadly, there's no 6.3mm adaptor in the sturdy bundled carry case, but there is an airline adaptor for use on planes. Oh, and an earwax removal tool!
Aside from armature configuration, there is another physical difference between the Custom-2 and Custom-3s: impedance. The Custom-2s have a lower impedance (16 ohms), meaning they require less power to be driven. This is ideal if you're going to be using a battery-powered portable device such as an iPod. Conversely, the Custom-3s have an impedance of 32 ohms, so require a slightly more high-powered input.
Performance
With regards to volume and power, however, the difference between the two models is negligible, suggesting the other variable affecting volume -- sensitivity -- is the same across the Custom-2 and Custom-3. The Custom-2s provide a pretty high volume limit, helped in part by excellent sound-isolation that blocks out noisy environments.
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