Summary: I bought this controller to use with my iPad 2. I works flawlessly - connect it via USB (iPad camera kit) and go. It takes power from the USB connection - no external power necessary. It has a programming mode which is simple to use. The keys are a bit flimsy but you get used to it. What it is NOT? It is not a keyboard with its own audio output. You cannot just connect it to speakers and play.
Summary: I was looking for a good usb keyboard to learn play piano with garageband and let me tell you there wasn't better choice when I found Alesis q49 with 49 keys, I think this keyboard is the best for me and other who are beginners with the piano but they already want to create his own music because this amazing keyboard not only works with garageband on my macbook pro, but with ableton live (it also came with a lite version of this software) and it is a very cool "fusion"...
Summary: I bought this because it came with the Ableton Lite, and it's just what I needed, to find sounds in the computer software so I don't have to use my computer keyboard all the time. I can save space with this compact controller and I found myself working on my bed sometimes, isn't that nice.
Summary: This thing looks cool, feels good, and is great value. Probably the perfect keyboard for Garageband users. More advanced users, say the Ableton Live crowd, should get the model up, the QX49, as that has lots of controller knobs, drum pads, DAW transport controls etc, that this basic model does not have.
Summary: I looked around for multiple keyboard controllers, and none of them were 49-key at this price point. I thought: "shoot, it's just a simple midi controller I need, why go fancy?" It was money well spent. I use it as a midi controller for Ableton Suite, and it's as sensitive/responsive as I need it to be. Definitely consider the Q49 as a value midi controller option.
Summary: I am an amateur musician and I tend to use Garage Band to compose a lot of my tracks. As I started using different instruments, I realized the Mac is going to die if I continue using the keyboard. So on with the research for a suitable midi keyboard not hard on the pocket but delivers the goods. After some research and reading some reviews I honed in on the Alesis Q49.
Summary: I bought this as a replacement for my defunct M-Audio Keystation 49. The deciding factor was weight, as both the Q49 and the Keystation are approximately the same price and I needed something as light as possible without settling for anything under 49 keys. Though the keys feel a bit less solid than the ones on the M-Audio, the unit, on the whole seems fairly solid. As for functionality, I was pleasantly surprised.
Summary: This is a little jewel of a keyboard, compact, light, velocity sensitive and fits easily into a computer setup or the iPad. Works without needing a powered USB bus on the iPad -- just plug it into the iPad USB camera kit USB connection and it plays aps like 50ini1 Piano and GarageBand. My Windows 7 pc recognized it and auto-loaded the correct interface -- it works well with Propellerhead Reason (using the ASIO interface) and Akoustic Piano.
Summary: After two weeks of using this with the kids, I am compelled to write a glowing review. I was looking for a medium size keyboard that would serve as a teaching tool for the kids. I wanted something that worked out of the box with an older Mac laptop (a G4 running an old version of Garageband). I wanted something compact and easy to move about the house, but nothing so small that you quickly ran of out room while performing.