Don't gamble with your musical instrument. Use only a genuine Yamaha power adapter. The PA-150 adapter replaces the PA-5D and is environmentally friendly by reducing the power when the musical instrument is turned off saving you money! Plug it in and play your instrument without having to worry how long the batteries will last. The PA-150 is designed to eliminate your constant need for fresh batteries by using efficient AC operation. Recommended for YPG-225, DGX-220, YDD-60 and DD-65. Also compatible with past models recommending the PA-5D adapter.