Presonus Atom SQ

Pros:
- Small, compact and lightweight
- Good build quality, good feeling pads and very sensitive.
- Polyphonic aftertouch
- Infinitely rotating knobs (makes it like a console 1 for plugins)
- You can play keys and it feels okay
- You can change the layout of the keys and select which specific octaves you want to see (if you want the first key to start on G or B or E, that's possible)
- Built-in arpeggiator
- Big touch strip, you can do some tricks with it
- Extensive transport controls using the knobs
- Bright LEDs
- Sequencer function for Studio One
- Integrates really well with Studio One
- Includes Studio One Artist, loops and tons of plugins.
- Black on white looks so cool

Cons:
- No sustain pedal jack (you can press and hold A as sustain)
- Needs some getting used to because of unique layout
- Needs to have a power switch (you cannot turn the lights off instantly)
- Can be very confusing at first

I have ableton Push, but I need a smaller controller that able to put in backpack, this is the best solution for me so far.
Although it's not flawless, some function is not as good as Push, but the solid knob and great quality pad,it is enough for me.

I've use Ableton for ten years, mainly produce. I am not a good keyboard player, the scale of Atom SQ made me decide to buy it. It's really handy to change key or use different mode.

Looking forward Presonus to upgrade the software , Atom SQ is beautiful and so much potential. It's a good thing for this company made a smart and creative controller.