Introducing DirectStream Junior (DSJ), a world class DAC based on the architecture of the Stereophile and Absolute Sound’s Product Of The Year, DirectStream. 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. 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.
Physical
Unit Weight:18 lbs [8.1 kg]
Unit Dimensions: 14” x 17” x 2.75” [ 36cm x 43cm x 6.98cm]
Shipping Weight: 27 lbs [12.25 kg]
Shipping Dimensions: 20.5”x 24” x 10” [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