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Official Site
OVERVIEW
Pure DSD done right
DSJ uses the same FPGA architecture and customized code as PS Audio’s DirectStream DAC,
and it is designed and built by the exact same team. The idea behind the DSJ was to offer
near-identical performance at a fraction of the cost. How was this accomplished?
Lower cost chassis and user interface.
DSJ, like DirectStream, is hand-written, discrete, perfection based conversion that uncovers
all the missing information hiding in your digital audio media for all these years. CD’s, downloads,
high-resolution PCM or DSD based media are expertly upsampled in the DSJ to ten times DSD
rate and output as pure analog directly into your amplifier or preamplifier.
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Classic PCM-based DACS, including many of today’s DACS that can also process DSD, tend to
cover up some of the subtle musical details buried deep within digital audio music; a problem
inherent in their architecture. DSJ solves this problem by employing a pure DSD single-bit
approach for both PCM as well as DSD media. This means that your entire library of music
can finally reveal all the music and subtle low level details buried deep within its core – and now,
at a more affordable price than its progenitor, DirectStream.
Imagine going to a recording studio and listening to a master tape of any recording made.
This is the experience DSJ affords its owners who enjoy a renewed sense of enjoyment and
discovery when listening to everything in their library: CD’s, downloads, DSD.
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FEATURES
Full FPGA based DSD DAC
85% of the performance of DirectStream
OLED Display
Haptic feedback stepped attenuator
Large linear power supply
Same FPGA as DirectStream
Fully balanced design
Asynchronous USB
I²S input connects to upcoming DirectStream Transport and plays SACD in DSD
Built in Bridge II standard
Drives power amplifiers directly
DirectCoupled balanced output stage
Fully upgradeable firmware
SPECIFICATIONS
Physical
Unit Weight
8.1 kg
Unit Dimensions
36cm x 43cm x 6.98cm
Shipping Weight
12.25kg
Shipping Dimensions
52cm x 61cm x 25cm
Power requirements
Input Power
Model specific 100VAC, 120VAC, or 230VAC 50 or 60Hz
Power Consumption
30W
Digtial audio inputs
I²S, Coax, XLR Balanced, TOSLINK, USB, Ethernet
Sample Rates
I²S,S/PDIF, and USB -- 44.1kHz to 352.8kHz 16bit, 24bit, DSD 64, DSD 128
TOSLINK – 44.1kHz to 96kHz 16bit, 24bit
Analog Audio Output
Connector
RCA/XLR Unbalanced /Balanced (X2)
Output level, low
1.41 Vrms(+5BV)/3.15
Output level high, maximum
2.81 Vrms (+8dBV)/5.3 Vrms (+12dBV)
Output Impedance
100Ω/200Ω
Frequency Response
20-20KHz +/- 0.25dB
THD+N @ 1KHz (full scale)
<0.03%
Output Stage
Active high current, high speed analog amps producing double rate DSD.
Data Handling
Format
PCM or DSD
Sample rate (PCM)
44.1kHz, 48.0kHz, 88.2kHz, 96.0kHz, 176.4kHz, 192kHz, 352.8kHz
Word length (PCM)
16b, 18b, 20b, 24b
Data rate (DSD)
Standard (2.8MHz) or Double (5.6MHz) DoP on all inputs as well as raw DSD on I²S inputs
Input jitter reduction
Effectively 100%, residual immeasurable. No input PLLs, FLLs.
Input Processing
170MHz
Signal Processing
50MHz
Synchronous Upsampling, all inputs
28.224MHz
Digital Processing S/N ration
>146 dB
Digital Volume Control
Zero loss of precision
Analog Conversion method
Delta Sigma (DSD) Single-bit double rate
I²S Digital Input
Connector
HDMI
Format
PCM or DSD. DoP on all inputs as well as raw DSD on I²S inputs
USB Digital Input
Connector
USB “B” Type
Format
PCM or DoP v1.1 (DSD over PCM)
Transfer mode
Asynchronous
GALLERY
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