Yamaha PSR-EW425 / PSR-E473 models launched Yamaha has upgraded its PSR-E/EW line of keyboards with the introduction of the PSR-EW425 (76 key) and PSR-E473 (61 key) models, adding to the series and eventually superseding the PSR-EW410 and PSR-E463 respectively. Launching in the Spring, they are still part of the more […]
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