PS Audio DirectStream DAC Mk.2 measurements

-80 dB ultrasonic noise floor, amazing... For 8 k usd. PS Audio PerfectWave DirectStream MK2 D/A processor Measurements | Stereophile.com Sidebar 3: Measurements I measured the DirectStream MK2 first using my Audio Precision SYS2722 system, then with the magazine's higher-performance APx500. The review sample was fitted with the v2.3.5 FPGA firmware, but after I experienced some anomalous measured results, I installed the v2.3.3... www.stereophile.com