That would be nearly impossible! I wish I could find the photograph of the earliest machines, effectively double mono - I see I was more than ambiguous.
Only since computers have been used has it been feasible to line up two independent sources - Elgar conducts Elgar in accidental stereo:
Only since computers have been used has it been feasible to line up two independent sources - Elgar conducts Elgar in accidental stereo:
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