Dan and everyone else, the PSR-EW400 is also a fantastic keyboard. It has the same Acoustic Piano that's in the P series piano (the 300 has the same piano that was in the YPG235) and stereo outputs, which the 300 does not have. It also has the large round data wheel like the YPG235 and Yamaha has left off the 300. The best news is that Yamaha has reduced the price of the 400 from $399 to $299 and this includes the PA-300 power adapter (same as the one used for the 770 and 970 keyboards). For $100.00 more than the 300 the 400 is a much better keyboard suited for musicians that need to play out and use external sound systems and want a really great acoustic piano sound in a very lightweight 76 key keyboard