EDIT: I opened this and the Android phone DAC thread, thought i was on a different thread when making this post. Some of this information still applies, will add to the bottom of the post in a moment.
While I haven't been watching the thread here, I have been paying attention to news. Honestly, you need a Micro-USB to Female USB adapter to even try it on phones. The thing is, I have said cable, and it doesn't work on my Android phone, but it is meant to work on a Samsung Galaxy Phone/player. Many different devices exist and it's all up to the manufacturer/OS builder. Some phones/devices can use the cable just fine with the Gingerbread OS (2.3) and some can't even use it with 4.0.3 installed. It's all a gamble right now, as not every device is supported, we need to compile a list of working devices. It also may be different for devices that are running the latest build of Cyanogen, as I have heard it has support for USB Audio passthrough.
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Originally Posted by _mouse_ /img/forum/go_quote.gif
Did you know if it's possible? Today my Fiio E17 and I would connect it by the usb plug ...
BTW, the cable I got was from Amazon, I believe i've posted a link in this thread or at least another one. Another thing is some devices have been confirmed to work with the cable with a USB Flash Drive, but most people haven't really tried using it as a USB Audio source. Not sure that some of the devices confirmed to be able to use the cable are even able to pass audio through it. This is one of the cases where I have some of the necessary parts, and not much incentive to get the rest since I don't have anything working with my phone using the cable. When that day comes I'll be taking more interest. Might be considering an iPhone for my next phone though, so all this may not be very important to me, as I probably will get (don't remember the name) that device thats a case and an external DAC for iPhones to use. (Hoping for a huge flash based storage iPhone, preferably like, 4 times the capacity of the current highest model would work quite nicely with some growing room).
EDIT 2: So, basically, I use a rooted Sensation 4G, which is the same in all specs besides the stock firmware to the Sensation XE (Beats is literally a software based implementation on this phone). I am using 4.0.3 (i believe) and have had no luck using any USB based device with the phone. It's unfortunate, it sucks, etc. I don't really see this changing that much. USB Audio output on Android based devices isn't a high concern and is a pretty niche market (though I always feel if I want it, i'm market enough for it to exist). It's possible to have the feature added into OS 4.x.x but it's more than just HTC or a ROM builder putting in the driver. Their may be more to it, not entirely sure