The cheap (~$10) chineese chargers = no interference, but you really need a 3A supply if you are going to use it with GPS on and hope to keep your device at least even on power. I bought 2 because the first one didn't use a micro usb input which meant I had to have an extra cable if I wanted to directly connect for a faster charge.
The expensive OWL charger ($50 and also not mini or micro usb) which I got for my dad as a present totally messes up the radio and only comes with a 1A charger so I'm guessing it can't keep up (never used it long enough to find out due to the radio interference and aux in hiss it generated). I contacted OWL about a fix or refund, but have yet to receive a response.
It costs a couple of bucks to produce a headphone, and the bulk of the research into sound quality was finished decades ago, yet people still spend 300-5000 on high end headphones that don't sound much better than a 50 dollar pair.
WRONG: I've never heard a $50 pair of head phones that are anywhere as accurate as the Etymotic er6i which had an MSRP of $99. Unfortunately, I broke mine and Etymotic discontinued production. I found their newer offerings are to uncomfortable for extended use, so I switched to the Shure SE215-K, which also has an MSRP of $99. The SE215-Ks sound almost as good, but are far more durable, and like the ER-6is, no $50 headphone compares.
I'm not exactly a neuroscientist but at this point feel it's pretty safe to say that consciousness is just he sum of electrical impulses though a weighted connection of neurons and it's correlative magnetic field (a bunch of wires with amplifiers and resistors and electricity running thought them); and depending on your philosophy, this may also require that some (or most) of the electrical input be triggered in response to an environment. Given that computers respond to key strokes, they may well be conscious. Either way (brain or computer) no electrical activity = no consciousness. Sentience on the other hand is a bit harder to pinpoint, and there is even scientific rational that children under 5 may not be fully sentient (with respect to adults), or conversely most animals with fur are sentient as sentience is often reduced to be ones ability to experience pain and pleasure based on environmental input, rather than be strictly reactionary to that input.
There are only a few days left on the Kickstarter ( http://kck.st/1pCusil ) so now's the time to show support for a hackable smart-home platform that integrates music with colorful LED light bulbs.
Full disclosure: I am one of the co founders. Even though I am not working for them anymore, I still really want to see open-source, hackable LED lighting make its way to the masses."