@chakster is correct in that the Denon shines in heavier tonearms@jasonbourne52 is also on point in that the Denon is known to sound best with a good SUT ( even if you have enough gain )
However this is a good time to see how far you can push the existing setup. It will help of you would describe your process to optimize table and cart setup ( vtf sra azimuth zenith ) etc. So others may chime in with their experiences. May as well vett this gear fully before upgrading ( which you may have done but not yet described )