
The earlier keyboards do not have the megavoice technology. Those original styles will play, as is, in earlier keyboards, but they will NOT sound good.

But the technology was only available in the Tyros. This technology provided more realistic sounding instruments, particularly the guitars, for the styles built into the Tyros. This model included a new MegaVoice technology. This style compatibility, however, was broken with the introduction of the Tyros model. It is for this reason that one can take a style that was available on the PSR8000 and play it in the PSR740 or the PSR2000. These voices are used in creating the styles for many of the keyboards. While there have been a series of Yamaha keyboards produced, they have ALL included a basic set of 480 XG and GM voices. Styles, however, can be 'tuned' to optimize their sound on each of the keyboards. Thus, a style from an older keyboard may, indeed, play on a newer one, but it may not sound exactly the same. I say 'somewhat' because while the operating system may be similar, the hardware is not and the voices included with each new keyboard are generally different. It also means that many of the styles will be somewhat interchangeable. The similarity in the operating system means it is fairly easy to move from one model to another. It is also essentially the same operational system used in the Yamaha CVP digital pianos.

That system has been carried forward in the Tyros, the 2100, the 3000, the Tyros2, the PSR-S900, the Tyros3, the PSR-S910, the Tyros4, the PSR-S950, the Tyros5, the PSR-S970, and the PSR-S975. The introduction of the PSR2000 was an entirely new and different operational system. The PSR730 and PSR740 model families operated much the same way. You'll find that same idea in these arranger keyboard models. If you have paid attention to the evolution of car models, you will undoubtedly have noticed a major model change occurring in one year and then that basic 'body style' being carried forward for several years before another major style change.

New Keyboards Every Year Yamaha Arranger History Keyboard To learn a little bit more of this history, read on below. Since then there have been many more models and the PSR Tutorial kept expanding with each new model. These models represented a brand new mid-range Yamaha arranger keyboard very different from the previous PSR740/640 series. This site, the PSR Tutorial, originated when the PSR2000/1000 models were introduced. If Yamaha and/or arranger keyboards are new to you, you might be interested in learning a bit about these keyboards and the 'styles' they contain as well as Yamaha's track record for announcing new keyboards.
