I know it sounds weird but I am a beginning piano player and bought a Studiologic 880 keyboard second hand because I got a great deal in order to learn to play. A piano was too big for my apartment So, I buy it off this kid and he says all I need is the chord in the back and I'm good to go. Well, I have now purchased, speakers and an amp and plugged it in and I can't hear anything. I know it is connected right so here is my question and sorry if it is elementary but I'm a beginner. It does not have a Midi cable connected in the back and I have one coming in the mail. Does it have to be hooked up to the computer to hear the keyboard? I thought I would be able to at least hear the keyboard without being hooked up to my computer all the time. if anyone knows what the deal is, I would sure appreciate your expertise. I hope the kid didn't rip me off. Thanks!