PS Audio DirectStream Digital To Analogue Converter

Rear panel image shows version with optional Bridge II Network Audio Card fitted.

DirectStream is one of the most remarkable DACS ever built and the reviewers agree. Hand written, discrete, perfection based conversion that uncovers all the missing information hiding in your digital audio media.


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Product Description

CD’s, high-resolution PCM or DSD based media are expertly upsampled in the DirectStream to ten times DSD rate and output as pure analog directly into your amplifier or preamplifier.


    • Pure 100% DSD based D to A Converter
    • Fully upgradable through software releases
    • Resolution perfect volume and balance controls built in
    • Upsamples PCM and DSD to 20x DSD rate
    • DXD support
    • Purely passive transformer coupled output
    • Improves imaging and soundstage
    • Simple, direct signal path with one master clock
    • Hand written filters, processors and upsamplers
    • Immune to incoming jitter problems from different sources
    • Increased digital headroom
    • No off-the-shelf IC DAC chips used
    • Uncovers musical details masked by typical PCM based processors
    • 7 digital inputs
    • MQA and Tidal ready with optional Bridge II
    • Fully balanced from input to output
    • Color touch screen


    Unit Weight: 13.5 kg
    Unit Dimensions: 36cm x 43cm x 10cm
    Shipping Weight: 19 kg
    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(2), Coax, XLR Balanced, TOSLINK, USB, Network Bridge slot
    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
    XLR (AES/EBU) — 44.1kHz to 192kHz 16bit, 24bit, DSD 64
    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&IM @ 1KHz (full scale): <0.03%
    Output Stage: Passive audio transformer, fed by 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 ratio: >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

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