montana,
I sell the Privia PX575R and yes it is the WK3300 with an 88 key hammer weighted action. There is no line output jacks but a stereo headphone/output connection. You can use a cable that has a ring, ring, tip 1/4" connector on one side and two 1/4" ring, tip cables on the other side and plug it into a stereo mixer, etc. for outputing sound. It does have a mic input with built in echo/reverb effect. Any thing else you would like to know about this Casio?
It's a very popular piece in my store and if you would like........I can sell you one!
George Kaye
Kaye's Music Scene
Reseda, California www.kayesmusicscene.com