How do I buy an external stereo for my electronic piano? I want to buy an external stereo for my Nippon Electronic Piano, but I don't know how to buy one. Please help me. Thanks for your help!

1, you need by the electric piano's audio output terminal to determine the signal input terminal of the speaker.

2, you need to estimate the power of the speaker by the audio power of the electric piano itself.

Generally electronics use 3.5 headphone audio output terminals. If the audio power of your electronic piano is 2W you need at least 4W or more power active speakers.

You can go to the store to consult with the seller, and a number of comparative audition sound quality to finalize