A probable competitor of the 32/384 M2Tech hiFace DAC: the upcoming 32/384 Light Harmonic GEEK:
http://www.kickstarter.com/projects/gavn8r/geek-a-new-usb-awesomifier-for-headphones
https://www.facebook.com/LightHarmonic
"Hey audiophile geeks! I just launched a Kickstarter campaign for a $300 USB DAC/Headphone amp that does 32/384 and DSD128, engineered by Light Harmonic. Early backers can get it for $99.
[$99 for 100 super early adopters: all gone!
$119 for 200 early adopters: all gone!
$139 for 500 still kinda early adopters: all gone!
$159 for 500 you’re pushing it adopters: on going]
https://www.kickstarter.com/projects/gavn8r/geek-a-new-usb-awesomifier-for-headphones/pledge/new?clicked_reward=false
An on-the-go, high-res DAC and headphone amp that plugs into your computer's USB port. Your videos, music, & games will rule!
GEEK takes a lot of the technology we developed when we were researching Da Vinci DAC,
http://www.audiostream.com/content/light-harmonic-da-vinci-dac
and squeezes it into one tiny little package that we plan on selling for $299 retail. Stick it into your laptop and plug in your headphones!"
"What DAC Chip are you using?
We're using the TI PCM1795 DAC IC.
What USB Asynchronous chip it use?
SMSC USB3343
Does GEEK have volume control?
Yes. there are two buttons on the side of the device that control volume up/down, mute, and 3D on/off.
Will GEEK work on all computer operating systems?
Every operating system that has native support for USB 2.0 will work without the need to load a driver.
Would the Geek also work with my Nexus 10 Tablet connecting it using an OTG USB cable?
We haven't tested that. In theory it will work, but keep in mind that GEEK's amplifier is pure class A. While not playing sound it doesn't draw power. But when sound is on, it draws A LOT of power."
http://www.kickstarter.com/projects/gavn8r/geek-a-new-usb-awesomifier-for-headphones/comments
http://www.head-fi.org/t/595071/android-phones-and-usb-dacs/2670#post_9639021
GEEK vs. the Others
http://mustgeekout.blogspot.fr/2013/08/geek-vs-others.html