I just got a KB2 out of the box, and plugged my Kurzweil PC2X. Immediately I realized the higher 5 keys don't respond quite correctly
, instead of the clear crystal "tick" that normally those keys produce I can only hear a very low "plug"; way lower than the volume on the other keys. I tried with another amp (Envoy 110 I know it's for guitar but that's what I have) and notes sound correctly. Switched back to the KB2 and "plug" again.Is this something related with the frequency response of the KB2, not matching the 3kHz or more on those keys or maybe my amp is malfunctioning? My old KB3 Frequency response was 20Hz-20kHz and used to sound pretty good before suffering of dead transformer, but I couldn't found the same data for the KB2.