Excerpt: The Yamaha PSR S650 is a good entry level keyboard. Great for beginners or someone who is on a budget but still wants a good quality keyboard. When it comes to keyboards and instruments, everything is relative and the price is usually an indicator of how good a keyboard you're getting. For $800.00, this keyboard is worth it. What I particularly like about the Yamaha PSR-S650 is its Mega Voice feature. The voices that make use of this feature sound very real indeed.