Solid manufacture, effective controls
If I was to try and dream up a sequencer on my own, it would be pretty much exactly like this. It can be simple or you can go deep, very deep. This unit can be configured in a custom setup to be as unique as your sounds are. I like to think of the way this sequencer works as a type of audio braiding.
One comment i would like to share with people thinking that this may be what they need is to point out that most of the videos and comments could be more forceful in describing the solidity of the BSP, it is no lightweight toy. If i saw this in the 1980's I would have sold my motorcycles and paid a fortune. Someday, sure, someone (maybe Arturia) will make something that goes even further in the sequencer design field, something yet un-invented. Mean while, I am absolutely convinced that this is one of the best tools in my home studio environment, well, except for my brain.
This is a wide open slate to draw on and if you are a preset synth player you can live without it. If you are the kind of musician who hears a buzz or bleep and thinks, "I am making you into a sound that expresses my music, my music, not some rehashed and boring work..." this is the tool you need to massage the music into a form you feel is best. I doubt that I will let this go within the next decade. It's that good. Massive sequence ability, huge flexible approaches, and user friendly for people who are ready for it- and attractive as can be-that's beat step pro. Arturia, you have it together. Thanks to Sweetwater I have one now. When these vanished off the shelves recently I thought I was too late...