I listened to ELP Pictures at an Exhibition to also hear what you were talking about distortion on the left channel on my nearfield monitor Genelec 1031A, reassuring?
Anyway good memory of a show I saw in the 70s :-)
Vindication! Thanks.
Listen to Tarkus and you'll hear the "chiff" in the Hammond, almost continually, in the left channel.
The problem with "high resolution" speakers is that you also hear all of the flaws in the recording chain. I hears lots more stuff on the Merman's than on the the L300s. Also the Mermans do "reverb trails" properly, and the L300s pale in comparison in this area.