KarthikPai

Thank you @Jokeyman123 for the response. Here are some clarifications: " are you placing it on the factory stand or is it sitting on something else when you play? " ---> NO. I am using Hercules KS 201B keyboard stand. " Without voiding any warranty make sure all the cabinet screws are tight underneath-shipping from the factory could have caused that although 2 keyboards in a row. " --> Checked. Issue still persists.

I notice the same issue with PX 560. @PianoManChuck Is there any noticeable difference in PX 560 reverb presets? Or am I having a defective piece?

I noticed an issue in the built in speakers since the day i purchased PX 560. When the volume is over 50% and I play bass notes between E1 to A2 I get buzzing noise and vibration. This noise is very noticeable for E.piano sounds and Fingered bass sounds. I also got it my piece replaced and the new one also has the same problem. Can anyone let me know if this is a known issue? PS: This is not applicable when played with earphones, external speakers and usb recording