I was not enjoying the performance until I ......

Equalized it with the Schiit Loki unit.  Miraculously, when I boosted the bass which was lacking, the performance came to life.  It’s amazing how my long term  prejudice against using an equalizer caused me to reject so many recordings on the basis of sound deficiencies.  Now I can enjoy previously rejected wonderful performances.
The Loki is an amazing device.  The ingrained bias against tampering with the “purity” or sanctity of the original artifact is rendered ridiculous with it.  It’s of such high quality that it does  not interfere with the 
good qualities of the original disc.  By manipulating the frequencies slightly you can, to use a cliche, turn a sows ear into a silk purse.