MEASUREMENTS

I measured the Okto dac8 Stereo with my Audio Precision SYS2722 system (see the January 2008 “As We See It”¹). Apple’s USB Prober utility identified the Okto as “dac8STEREO” from “OKTO RESEARCH” with the serial number string “000000.” The USB port operated in the optimal isochronous asynchronous mode, and Apple’s AudioMIDI utility revealed that the dac8 Stereo accepted 16- and 24-bit integer data sampled at all rates from 44.1kHz to 384kHz. The AES/EBU and coaxial S/PDIF inputs accepted data sampled at rates up to 192kHz. The TosLink inputs were limited to sample rates of 96kHz and below.

The dac8 Stereo’s