Summary: I love this thing! One of the best purchases I have made. It's fantastic. It does everything it advertises and then some. The scratch feature works perfectly, with pin-point accuracy. Even better than vinyl turntables on the scratch, since there is no skipping. I love the fact that it also plays MP3 USB Flash drives just like CD's, with all the bells and whistles.
Summary: I was looking for a cd player to hook up to my mixer and play backing tracks. I did a ton of research and was never happy with any of the choices I found. I was using my BluRay DVD player to play cd's and it was a real pain to get it to work right. Then I ran across this thingie from Numark and from the description, it appeared to be what I was looking for. So I bought it! $190.00 with Prime's free two day shipping.
Summary: this can do what i want it to, IE play mp3's and I know how to beatmatch so no problem. It took a few hours of practice, but not that hard to move from turntables to these. The only problem was I got the first one, and it didn't work at all. I have heard other people complain about this. I then went ahead and got the multi year warranty, just in case. Otherwise for what they are they are good.
Summary: I have been using turntables for over 10 yrs now and have been against cd mixers. These are awesome ! You can do everything a turntable does and more. The USB drive makes it possible to get all the new mixes instantly and most of the time free. Travel is easier as well. I just load a couple USB drives and I have more tracks available than I could carry with vinly.