Recommendation for software to display effect of similar filters.

I have been pursuing releases from the predawn alpenglow of CD production lately.  This has introduced the need to deal with pre-emphasis when ripping and playing back these discs.  Means to deal with a RIAA curve are well documented and easily researched.  The RIAA curve should be a mathematical constant.  How it is implemented seems to differ.  

What I would like to know is what software would best illustrate the effect de-emphasis has produced on these files.  Further on from that I would like to see the subtle differences across copies of a song resulting from attempts to correct it using the various means.  The expectation is 1/2 db variance averaged across the entire file.  I'm having doubts based on listening alone that equal amounts are being removed at the same points.

This Japanese produced CD was bought specifically for the experiment.  It is recognized on all expansive lists of CD's pre-emphasis was applied to.  Between the Moncler jacket and stunning color reproduction of his headband on the actual booklet this was an easy choice.