The oxygen is a good "starter" controller, but if you're really in need of a 25 key midi controller there are much better (albiet slightly more expensive) options available. The biggest problem I have with this unit is the lack of true Midi ports. It uses USB midi, which is OK for users who are going soft synth only but is really not useable for individuals who need to interface with midi devices other than a lap top. The build quality is fine, it's not particularly solid but the knobs, wheels, and keys are responsive enough for a device in this price range. If this is all you can afford then it will get the job done. But if you have an extra 100 dollars, I would recommend looking at M-Audio's AXIOM 25.

The Oxygen 25, the smaller sibling of the Oxygen 49 and Oxygen 88, is around 16 wide, 9.5 deep and almost 4 high, weighing in at just under 2 kg. Although this is a small, light keyboard, shes not the smallest of midi controllers. Transporting it in a backpack is still doable, just make sure its a roomy one. I have read a number of reviews stating they expected the product to be smaller.If complete portability is a major deciding factor, you would be better off going for an ultra-compact midi keyboard, which would fit in a computer bag easily.Overall, this MIDI controller is a great value for rs 8500. It is well designed, light weight and feels great. Loads of features make it ideal for both music production in studio, or controlling sound parameters in live use.

The Oxygen 25, the smaller sibling of the Oxygen 49 and Oxygen 88, is around 16 wide, 9.5 deep and almost 4 high, weighing in at just under 2 kg. Although this is a small, light keyboard, shes not the smallest of midi controllers. Transporting it in a backpack is still doable, just make sure its a roomy one. I have read a number of reviews stating they expected the product to be smaller.If complete portability is a major deciding factor, you would be better off going for an ultra-compact midi keyboard, which would fit in a computer bag easily.Overall, this MIDI controller is a great value for rs 8500. It is well designed, light weight and feels great. Loads of features make it ideal for both music production in studio, or controlling sound parameters in live use.

Works great.The keys feel great and the keyboard is easy to set up.I just plugg it into my mac,push the power button on and start up garageband and it work great. No hassel!I recommend this product!

I just starting using this controller recently...so I will give you my opnion based on what I know so far. First, It's a nice little controller...I'm using it with Mixcraft 6 ( Which is awesome) and it so easy right out of the box. I mapped all the controlls and sliders the way I wanted to. I have little experience with MIDI controllers but this one seems to do the job just fine! If your a beginner like me then go ahead and buy this thing if you can't afford an expensive keyboard like me.

When I ordered this, I wasn't sure if it would be the right controller. I already have an axiom 61 and am very pleased with that. Now wanting also something smaller (25 keys) and inexpensive (and more mobile) I thought I'd stick with m-audio.Size was very important to me. It's always hard to tell on pictures how big something actually is.. But it's smaller and more compact than I thought. The build quality is also very very good.. just like the axiom 61. I even prefer the knobs on the oxygen 25 because they turn smoothly (like on a dj mixer) and not like on the axiom where they click. I was thinking about getting the akai pro Mpk25 because that seems to be really good for mobile use. Already tried out the korg nanokey which is in my opinion a joke. Akai pro doesn't have full size keys either so I went for the oxygen 25. Of course the oxygen can't compete with the akai/korg size-wise but it's still really compact. It'll fit in a normal sized backpack, no problem.So overall it's a great midi controller. For at home or on the go. I assume it would be pretty awesome for live use/djing as well. One thing extra I would have liked would be one or two more faders... But you can't have everything : )