Two mic inputs, 3 band eq, beat synced sampler, 4 efx sections, full crossover, midi control, Stereo out. 32 bits. Also has most other standard features you would expect. The beat and BPM features are impressive. Also the crossover features are very functional and come in handy if you like that sort of thing.
This is my "beater" mixer. I bought it without doing a whole lot of research. I needed a unit under $500 that I could drag with me when I was in a hurry. A friend recommended this. I'll start with what I like about it. The inputs are good and I never have an issue with a lack of any of them. I don't even use all 4 channels usually. Every so often I will have an odd situation that calls for an extra channel or 2 so it's good to have as an option. Fading between that many channels can get crazy if you don't know what you're doing but the layout of the ddm is pretty sensible. For newcomers who have used an actual mixer board before, the DDM is moreso like a real mixer than other "DJ" mixers I've found. For a guy like me coming from a live audio background I find this to be great. Although there's something to be said for a unit like this that can sometimes feel like it's trying too hard to be 2 different things sometimes. Just something to keep in mind.
Now here's what I don't like. First of all my sub out doesn't work and never did. The fader sliders feel wrong to me. I'm not sure how to explain this other than saying they just aren't very comfortable to use. The tolerances are too tight? Also the gain meters on my unit don't show up too well unless it's very dark. I guess this isn't a huge deal since most of the venues I go to are fairly dark but still it's annoying. Other than that though I like this unit. The buttons feel good. and the knobs are okay.
Sound quality is surprisingly good. I find that Behringer stuff usually has a pretty good level of quality with sound while the hardware suffers more. Obviously my sub out not working is a bother. The eq is just okay. Nothing great but it works. I've never had any hiss issues. I know someone told me it had a built in noise husher or something but I didn't see anything about that in the manual.
Like most products, it has to last, and considering the amount of times I have dragged this mixer around town, I'm impressed that it's lasted. It seems to me that Behringer stuff that breaks, is going to break very soon after buying it, and then it will never mess up again. Fortunately mine is mostly functional after 2 years of use. It's not the best mixer I own but for the price I like it. Well kind of. Honestly I feel like this unit should be more in the $300 range. Yes the features are killer but it's behringer...