GREAT NEWS Everyone! I just discovered that I was able to easily CORRECT the bass track volume problem by simply changing the Tyros 'EQ/Compressor' Setting to another PRESET setting.

Apparently the BASS track's volume was NOT too loud afterall, and it was just the pre-selected Tyros overall EQ setting that seems to be over emphasizing the bass, making the bass track appear too loud. With the Mixer EQ-Compressor settings finally tweaked to my liking, ALL PARTS: individual style part instruments, live keyboard sounds, and vocals sound great now.

MANY thanks to Terry Telson for directing me to the Tyros' POWERFUL Mixing Console EQ/Compressor feature which allows you to fully customize and tailor the keyboard's sound output to individual tastes. I once again am HIGHLY enthusiastic about the Tyros, and think it's definately a worthwhile upgrade (for me) from the PSR2000. Merry Christmas to all. - Scott