The July issue of the UK-based audio magazine Hi-Fi+ (sister publication to The Absolute Sound) includes a very positive review of the DS DAC and the Pikes Peak OS. The reviewer, Chris Martens, also used the PerfectWave Transport, in part, when he put the DS DAC through its paces.
He states: “The DirectStream DAC is one of the most analogue-like digital audio products I’ve yet heard. By this I mean its sound reminds me of a very high-quality analogue reel-to-reel tape deck, but of course without any tape hiss at all.”
He concludes: “PS Audio’s DirectStream DAC turns the established order of things in the PCM-centric digital audio world upside down and it sounds all the better for it. I have greatly enjoyed my time with the DirectStream DAC, in no small part because it has demonstrated the sonic benefits of a fundamentally different – and perhaps fundamentally superior – method of playing both PCM and DSD digital audio files. For this reason alone I would encourage readers considering DACs in this price range to give the DirectStream DAC a very careful listen. If your reactions are anything like mine, you may find yourself won over by the fresh musical insights this DAC makes possible, even on recordings you once thought you knew well.”
Mr. Martens ran the DAC straight into his monoblocs and from what I gather, played both discs of all types and also digital files. Although he mentions the Bridge, I’m not sure he used that method of input.