Today, I received a Korg Poly 800 that much less than pitch perfect. This unit was almost a whole step out of tune! So in this post, I go over a tune-up procedure for tuning the Korg Poly 800 to the correct center pitch. The Korg Poly 800 Since it’s release in 1983, the Korg Poly … Continue reading Repair Room #11: Korg Poly 800 Tune-Up