Here’s Roland GO:MIXER PRO-X, a very portable phone and tablet-friendly mixer that works with both Android and iOS that looks pretty sweet if you’re a musician on the go, wanting to live stream from the bus or a mountain top (or just want to take your podcast interviews on the go). The mixer has 7 inputs as well as a loop-back feature if you want to play along to audio playing on your phone.
With its versatile input selection, you can plug in a guitar or bass, XLR microphone, mono/stereo instrument, and two line-level devices to mix and capture performances on the spot. […] The headphones jack even supports a second mic feed, allowing you to bring in another voice with a headset mic or smartphone earbuds.
Read more at Roland.com