Specifications - DirectStream DAC MK2

Physical
Unit Weight 21 lbs [9.53 kg]
Unit Dimensions 14” x 17” x 4” [ 36cm x 43cm x 10cm]
Shipping Weight 30 lbs [13.6 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 25W

Digital audio inputs

 I2S (2), Coax, XLR Balanced (2), Optical, USB

Sample Rates

 Optical (TOSLink): PCM 16 and 24 bits at 44.1kHz, 48kHz, 88.2kHz and 96kHz

 

S/PDIF and AES3: PCM 16 and 24 bits at 44.1kHz, 48kHz, 88.2kHz, 96kHz, 176.4kHz and 192kHz; DoP64

Dual AES3: PCM 16 and 24 bits at 44.1kHz, 48kHz, 88.2kHz, 96kHz, 176.4kHz, 192kHz and 352.8kHz; DoP64 and DoP128

I2S: PCM 16 and 24 bits at 44.1kHz, 48kHz, 88.2kHz, 96kHz, 176.4kHz, 192kHz, 352.8kHz, and 705.6; DoP64, DoP128, DoP256, DSD64, DSD128, and DSD256

USB: PCM 16 and 24 bits at 44.1kHz, 48kHz, 88.2kHz, 96kHz, 176.4kHz, 192kHz, 352.8kHz, and 705.6; DoP64, DoP128, DoP256, DSD64, DSD128, and DSD256

Analog Audio Output
Connector RCA single ended or balanced, XLR balanced
Output level high, maximum 4 VRMS Balanced
2 VRMS Single Ended
Output Impedance <100Ω/<200Ω
Frequency Response 20-20KHz +/- 0.25dB
THD+N @ 1KHz (full scale) <0.1%
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; 705.6kHz
Word length (PCM) 16b, 18b, 20b, 24b
Data rate (DSD) Standard (2.8MHz) or Double (5.6MHz) DoP as well as raw DSD on I2S and USB inputs
Input jitter reduction effectively 100%, residual immeasurable. No input PLLs, FLLs.
Input Processing 225.792MHz
Signal Processing 56.448MHz
Synchronous Upsampling, all inputs 56.448MHz for 48k, 96k or 192k; 11.2896MHz for all others
Digital Processing S/N ratio Upsampling > 210dB, volume control and Sigma Delta Modulator: > 330dB
Digital Volume Control Zero loss of precision
Analog Conversion method low pass filter DSD256 (quad rate DSD: single bit DSD at 11.2896MHz)

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, DoP v1.1 (DSD over PCM), or Native DSD
Transfer mode Asynchronous