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"Thank you so much. My homemade record from 1961 had been played so much it was almost nothing but skips and scratches. You returned it to its original sound as if you brought the band and singers in to re-record it."

Standard operating level

A specified reference level. In recording applications, standard operating level is defined as O VU = + 4 dBm. In broadcasting, O VU = + 8 dBm: