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“The choice of a FPGA over a DAC chip was easy. FPGA’s allow as much or little full width math to be used as we need. Unlike typical small DAC chips, we’re not limited by the heat needed for intensive upsampling and other processing duties. We use more power and physical area to dissipate heat without conflicting with other functions on the board, most of all the analog output. The Xilinx Spartan 6 FPGA allows complete freedom of processing power and clock choices: our design runs the input processing at 170MHz, the oversampling at 56MHz, and the output at 5.6MHz.” |
And that, folks, is pure marketing gobbledegook.
A FPGA chip is still a "DAC chip." Trying to differentiate is beyond absurd. |
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The DirectStream DAC maybe a good replacement for your non-USB, not-able-to-receive-a-192khz signal DAC.:smoking: |
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-E-,
If you're happy with an old non-USB DAC that can't receive 192/24 or DSD, fine. What's your problem with PS Audio? Does it make you feel good to crap on a product that you haven't heard? |
Maybe we should take it down a notch and see how it sounds before we pass judgement, that's all that really matters.
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I may not own any PS Audio electronics at the moment but having heard the PerfectWave first gen a few years back, with the PW Transport and the Digital Lens network card, I honestly don't think Paul McGowan is a "marketing" guy per se. I read his blog periodically and find he talks a lot of sense. His PW DAC IMHO broke some new ground, especially with the digital lens add on.
His new DAC IMHO follows on from what designers like Ed Meitner and Andreas Koch have also adopted in the past and the premise of using a higher clock rate (to push the noise level to a higher band) is IMHO sound engineering principles. In addition to EMM and Playback, which also use FPGAs, I have also heard the Chord QBD72 (the older non DSD model) which is another FPGA based design. It is also an incredible performer and was my dream DAC for a long time. |
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I agree there is no need to fight on a product that's not released yet. I don't see PS Audio as a pure hype company and I hope they'll deliver with this one. All I can say is that they got my attention |
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There are quite a few DACs that do 2xDSD. |
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56MHz is 10x 5.6MHz |
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