Title: Yamaha provides a good base product but fails to deliver the overall quality
Review: The keyboard itself seems great, but Yamaha fails to go the extra mile. Items that would seem like no-brainers are not included in the package (including a power adapter, audio/data cables, or even batteries). Basically, the failure to include a power supply renders the product inoperable out-of-the-box. These items would have been inexpensive to include and would have paid for themselves many times over in terms of customer satisfaction and loyalty. If you buy this product, be forewarned that you will at least need a 12v power adapter or 6 D-cell batteries for it to even function.
Is this product review negative?