Me Again,

It's fun to compare different models. Basically I think the P70 is a Yamaha's effort to make hammer action available at the minimum possible weight. The P70 has no display, smaller speakers (12x6 vs. 12x12), and fewer speakers (no 3 cm). If you take the dimensions and multiply them out, the volume of the DGX-505 is 63% greater than the P70. If you extrapolate, a DGX-505 with hammer action should weigh 46.87 lbs.!

I hope the YPG-625 won't be that heavy.

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Here's what I think: You'd get a different key action


Not entirely clear! The Radio Shack is a relabelled Casio PX-100, which has excellent hammer action, by all accounts. I suspect Yamaha ripped off Casio's new (hydraulic, I hear) system for getting hammer action, which helps explain the P70 and the new 625.

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different sound set, different styles,


The sound sets, styles etc. are all of a piece in the 200/205/300/305/500/505 line. The sound improvements have been pretty incremental. And some people prefer the 200/500 sounds. I have to think the 625 will just be another increment.

Hey George! I just figured out why they stuck us with those USB MIDI ports. I THOUGHT that was a strange upgrade -- take away functionality and steal sales away from their whiz bang MIDI to USB converter at the same time. Ha! They deliberately went out of their way to cripple mixing and matching like I'm suggesting in this thread. THOSE BUGGERS!

Best,
Rick