A few days ago I bought this keyboard on Ebay for a little over 300 dollars. It seemed like an incredible deal, since it was an 88 key, came with 2 sustain pedals, and had PC connectivity (via USB). Well...I finally got it yesterday via FedEx. I've been playing it heavily for the past 24 hours, and I absolutely love it. Though it only has 7 tones, the tones it has (Grand Piano, Brite Piano, Elec.Piano 1, Elec.Piano 2, Clavinet, FM Piano, and Perc.Organ) are very high quality. Also, their site has a lot of product support, even drivers for Windows Vista, which really helped me, since I have Vista Home Premium. I have connected the keyboard to my laptop via USB and tried it with Anvil Studio. It works flawlessly. It also has 2 headphone jacks in the FRONT, and in the BACK it has 2 audio outputs (Left/Mono and Right), 3 pedal jacks, a MIDI Out, and a USB 1.1 port. The only con I Have seen is that it lacks internal speakers, so you will have to use some sort of external amplification (I am using PC speakers using a 1/8 to 1/4 adaptor, you can get one for about 3 dollars at an electronics store such as RadioShack), but this is also a pro, as it greatly reduces the weight of the piano. Weighing at only 17 pounds, its light enough to carry with only one arm.

Overall, I give this keyboard a 4/5.


PROS: Cheap, great support, 88 keys, quality sound, PC connection.

CONS: Lack of internal speakers, semi-weighted keys (not a problem for me, they are actually okay).

very cool, sounds like a great purchase. what is poly?

Here's the official product page:

http://www.m-audio.com/products/en_us/ProKeys88sx-main.html

It's 126 polyphony.

Can you do a keyboard split? I like to put a bass sound on the lower keys and an organ sound on the upper. Can this keyboard handle that (with individual volume adjustment for each split)?