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Hi Brian,
That's good news. I've seen a few good demos of these KBs and they looked and sounded great. The E423 is the update for the E413. I can't see any difference but the color change. From Silver to Black.
The reason I'm leaning towards the E423 is that it's a 2010 model and the E413 is 2008.

Thanks for taking the time. You have a great Holiday, Wayne,


Here is the basic differences between the 413 & the 423 besides the color.
The Yamaha PSR-E423 is a syntherizer based portable keyboard, with many feature enhancements over its previous PSR-E413 model. It features 61 keyboard style keys, with Yamaha's Touch Response feature. This model features 2 real-time synthesizer control knobs and an improved arpeggio function. There are over 700 high-quality voices accessible on this keyboard, over 200 more than the E413 model, as well as an extended flash memory.
The PSR-E423 features two control knobs that allow for real-time control, just like an analog synthesizer would provide. The Arpeggio function has been improved for a smooth playability. There are over 200 more dynamic voices added to this model. The Extended Flash Memory encompassese 4 times more flash memory than the previous PSR-E413 model, and allows the users to transfer their songs onto the computer to edit and play them back on their desktop.
Brian

BIAB 2025 Ultrapack- Studio One Pro 7 Windows 11, Mac Mini M4 with Logic Pro 11, Melodyne Studio