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

KORG volca mix is a compact, 4 channel analogue mixer designed to go hand in hand with the volca series of gear. You get two mono inputs and one stereo (all mini jacks) along with three DC outputs, making it perfect to sync, power and control up to three volca units. Control-wise you can adjust the gain, volume, mute and hi/low pass filters on each channel as well for effects or just to balance the mix.

The master chain got a few effects as well (like expand mono to stereo and sidechain) and you can process the sound further by hooking up external effect units for each channel using the mini jack send out and aux in.

KORG.com: volca mix

Check out the KORG volca mix in action here: