But this one has a problem that...
synth sound is distorted and weird aftrer using an hour. (sounds like sticked heavy bass although i choosed sine, saw, even piano with PCM)
I checked so many times for tweaking all knobs 1000 times to find right sounds.
but after exhausted, i just turned off and read manual carefully.
a couple of hours later, turned it on again, and it's working

this is not only one time like this but working wrong again later.
is anybody know this kind of problem??
i found one guy on googling, who has this problem but there was no answer.
do i have to ask service?
hope to hear u guys voice, and i will appreciate.
thanks