I was introduced to the S4 by a friend who owned one. The S4 has given me the tools to forge my own style of mixing, and helps me create a fun and dynamic set. Some of my favourite features are the possibility to have 8 Hot cues, the ability to switch between 4 decks and the in-built sound card.
At the moment i am djing with one of these, i love how you can just turn it on and plug and play, Traktor software is essential the library is so clean and you only need your laptop to spin records. I just like how the kontrol s4 is a go to complete performance solution, with multiple awesome effects, my favourite one at the moment being transpose stretch and delay at the same time.
Don't mind the title... I've owned many controllers and this is THE BEST one I have ever used. I love the remix decks and effects racks, and the faders/knobs feel amazing.
You have Everything at your fingertops. You can create lists of different kinds of Music and easily sort through your Music Collection. Great all in one solution. I prepare cuepoint so that I can easily create fast mixing on the fly. This lets you do like mashups where you can combine the beats and build up from one track and then swith to another for the break down.
Still use it and love it.
Its quite fragile, Should be properly packed in your DJ Flight Suitcase. Especially when flying over to asian countries for gigs.
My Deck B/D Looper (pot) knob, broke when i was traveling around india to play.
Of course it have it's disadvantages. But it is as great as you can see ;) I will send you more info soon - probably :) But I love it. My firsto veeery Professional gear (hardware :D)