|
답변 5개 3 점 |
Korg B1 - specific notes don't work, problem with circuitry |
|
답변 1개 1 점 |
4 piano keys not working (seems electronic problem) |
|
답변 2개 1 점 |
Enquiry about Gem Real Piano RP800 |
|
답변 1개 0 점 |
Piano Keys very low volume |
