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Rarely I hear a terrible dynamic jump playing the A3 key. Indipendently if play ppp of not. I have a trouble on my Cp4?
Thanks!
Posted : 19/11/2015 7:37 am
You should have your instrument looked at by an authorized service center. You can usually find one near you through the global Yamaha website.
Posted : 19/11/2015 11:18 am
