https://nugenaudio.com/abassist2
Remove bias with blind audio comparisons. AB Assist 2 matches loudness, checks mono fold-downs, and compares up to four stereo or surround sources.
a bnugen audioabassiststereo
https://www.musicradar.com/reviews/tech/nugen-audio-stereo-pack-151306
If your productions are lacking width, this triple-pronged suite provides not one but three great cross-platform plug-ins to fill them out
nugen audiostereopackreviewmusicradar