One would've thought(?) that era was marred with the gimmickry of Decca/London's "Phase 4 Stereo" and its' 20-channel mixer?
However: the standard "ffrr" process used for such things as the Verdi and Wagner opera cycles recorded between 1964-1966 (conducted, respectively, by Schippers and Solti) still holds up very well.
However: the standard "ffrr" process used for such things as the Verdi and Wagner opera cycles recorded between 1964-1966 (conducted, respectively, by Schippers and Solti) still holds up very well.