In my office I have a mac mini, a gaming pc w/ asus xonar essence stx and an hp work laptop.  I'm looking for a device that can switch between these three input sources as well as two output sources - Audioengine A2 speakers and Senn hd 650 cans.  My soldering skills leave a lot to be desired so...

It's time for some audio upgrades and i'm looking for advice on a few options i've been pondering.  I currently have two systems - a mac mini (2011) and a pc w/ asus p9x79 using the onboard realtek alc898.  I connect them both to a pair of audioengine 2 speakers using 3.5mm jack.  I play music...