That's a good question KN_FAN. But I don't think that is the case. If that was the case then the KN2600 would have just the Pitch Bend/Modulation function together in one too wouldn't you think? As it is the KN2600 has two 'separate' wheels whereas the KN2400 has just 'one' wheel that looks the same as the one on my PSR 2000, ie., "Pitch Up/Pitch Down" (no side movement at all). I believe it is basically the same on the KN2400 as it is with the Yamaha PSR 1000 where it too has only a Pitch Bend wheel with NO Modulation capability that I am aware of.

PS: KN_FAN just call me Mike or Idatrod NOT Ida, please??? Ida has a feminine ring to it (here in the USA) and as you know I am NOT a female. Thanks,

Best regards,
Mike