Normally, it would not be my norm to add an inexpensive piece of gear or additional preamp circuitry into the signal path, BUT, given the profound improvement I experienced this morning by just using a simple twist of my balance control, who knows what's next---a tone control!?!?
Seriously, I am happy with the vast majority of my CD's as is. But in the future, I will be a bit less reluctant to use the previously unused controls on my preamp.