PS Audio DirectStream Junior - Page 7

Owner’s Reference DirectStream Junior
4826 Sterling Drive, Boulder, CO 80301
PH: 720.406.8946 service@psaudio.com www.psaudio.com
©2016 PS Audio Inc. All rights reserved.
Introduction
®
more accuracy in part of the spectrum than the 6dB / bit rule and it is understood that the quantizer
in a sigma-delta modulator can hide a multitude of sins in the noise shaping lter. Our instrument
still runs the noise shaping lter at full precision to get the cleanest DSD signal possible.
16. No shortcuts are ever taken in the Digital Signal Processing (DSP) section of the FPGA.
Despite the fact that DSD is only nominally 20bit S/N, the design uses a minimum width of 24 bits
throughout the device. Where needed, very expensive (in terms of math operations) lters with
wide coecients and 144dB S/N are employed along with many guard bits in the IIR lters and
the sigma-delta modulator.
17. Every trace on the PC board is hand routed: even for the digital sections. No autorouting is
employed so that each trace, each critical path is calculated and designed for lowest noise, jitter
and isolation.
The PerfectWave DirectStream Junior DAC represents a signicant departure in the design and
execution of PS Audio’s products. We believe this new instrument will help further our industry,
music and the faithful reproduction of music around the world, at an aordable price.