never setup a new keyboard using headphones.....in a rush I did that in the wee hours of the night as not to wake my wife in preparation for my gigs when I first received the E60. It sounds great through headphones, BUT, when I finally took it on stage to gig a few days later I really had to wrestle with Part Volume adjustments which I thought were fine......NOT!! So lesson learned when setting up your KB USE YOUR FULL STAGE PA SYSTEM at PERFORMANCE VOLUME! You'll be glad you did. In fact a week later I setup 2 hrs early at my job with no one there and really went through each setup tweaking at stage performance volume & now I'm a happy camper