Sherrick’s system included a VPI Avenger Direct turntable ($40,000; additional tonearm $6200), the new Backert Labs Optik Phono 1.1 ($11,500; intended for use with DS Labs optical cartridges). Phono cartridges were the DS Audio W3 ($5500) and W3 Mono ($5500). Other source duties called upon were a Rockna Wavedream Reference Signature DAC ($26,900) and an Innuos…