The NuWave DSD allows you to stream bit perfect digital audio, both PCM and DSD, in a number of different ways, including music stored on your computer. All incoming musical data are fed directly into a simplified FPGA in Native Mode, without the degradation typical of sample rate converter chips, common among DACs. Native Mode decodes any resolution audio from 44.1kHz/16 bit all the way up to double rate DSD with no processing by an SRC. The resulting improvement to sound quality sets new levels of performance for DACs anywhere near this price. The incoming data are identified, organized and prepared for proper delivery to the ESS Hyperstream DAC by the custom CPLD on the NuWave DSD’s input.
Asynchronous USB for PCM and DSD
The NuWave DSD features a high-resolution USB path based on the same XMOS technology found in our DirectStream DAC. Asynchronous and capable of 24 bit 192kHz performance for PCM and single or double rate DSD, the NuWave DSD USB input sounds every bit as good as the best digital audio is capable of. Using a high quality USB cable between the NuWave DSD and your computer creates an instant media server that can be controlled through any number of handheld devices like an iPad, iPhone or Android using a 3rd party controller program. Your entire music library can be managed by iTunes, JRiver, MConnect, Windows Media Player, Foobar, Pure Music, Bit Perfect, Media Monkey or Ammara (to name a few) for ease of use. If you have yet to experience the pleasure of scrolling through your entire music library and selecting the next track at the touch of a finger, you’re in for a quite a treat. With the NuWave DSD and a USB cable you can stream both PCM and DSD high resolution audio, using nothing more than your computer and a handheld device to control and play your entire music library.
For the first time in an affordable DAC from PS Audio, we have included an I2S input. I2S is the native format of all CD transports and many servers. I2S (pronounced I squared S) features separate clock and data signals from the source. Typically, these clock and data signals are multiplexed together to betransmitted over a single cable in a format known as S/PDIF (Sony Philips Digital Interface), or AES/EBU (Audio Engineering Society/European Broadcast Union).
Once received in multiplexed form, the DAC input must untangle the clock and data and once again separate them. I2S solves the problems associated with unravelling data of S/PDIF and AES/EBU formats. I2S outputs are sent via an HDMI cable and sources with I2S outputs can be purchased from PS Audio as well as other manufacturers.
Active vs. passive filtering
Once the digital audio data have been processed through the NuWave DSD’s ESS Hyperstream 32 bit DAC, it’s time to turn them into music and this is the job of the analogue filter and output stage. Most DACs use an active filtering system to clean up the output of the internal DAC but this can add a harsh, bright sound to the music. In the NuWave DSD we use all passive analogue filtering giving our output a sweet, open sound unencumbered with harsh digital artefacts.