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DirectStream DAC
(2014 model) DirectStream DAC MK2
(2023 model) Physical Unit Weight 22 lbs [9.97 kg] 21 lbs [9.53 kg] Unit Dimensions 14” x 17” x 4” [ 36cm x 43cm x 10cm] 14” x 17” x 4” [ 36cm x 43cm x 10cm] Shipping Weight 31 lbs [14 kg] 30 lbs [13.6 kg] Shipping Dimensions 20.5”x 24” x 10” [52cm x 61cm x 25cm] 20.5”x 24” x 10” [52cm x 61cm x 25cm] Power requirements Input Power Model specific 100VAC, 120VAC, or 230VAC 50 or 60Hz Model specific 100VAC, 120VAC, or 230VAC 50 or 60Hz Power Consumption 30W 25W Digital audio inputs I2S(2), Coax, XLR Balanced, TOSLINK, USB, Network Bridge slot 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

XLR (AES/EBU)S/PDIF (coax)– 44.1kHz to 192kHz 16bit, 24bit, DSD 64

I2S, and USB — 44.1kHz to 352.8kHz 16bit, 24bit, DSD 64, DSD 128 (I2S  DSD 256 with Sunlight update)

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

S/PDIF (Coax and XLR): PCM 16 and 24 bits at 44.1kHz, 48kHz, 88.2kHz, 96kHz, 176.4kHz and 192kHz

DoP64 Dual XLR: 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/XLR Unbalanced /Balanced (X2) RCA single ended or balanced, XLR balanced Output level, low 0.282 VRMS Balanced
0.141 VRMS Single Ended Output level high, maximum 2.818 VRMS Balanced
1.414 VRMS Single Ended 4 VRMS Balanced
2 VRMS Single Ended Output Impedance 100Ω/200Ω <100Ω/<200Ω Frequency Response 20-20KHz +/- 0.25dB 20-20KHz +/- 0.25dB THD&IM @ 1KHz (full scale) <0.03% <0.1% Output Stage

Passive audio transformer, fed by high current, high speed analog amps producing double rate DSD.

Passive audio transformer, fed by high current, high speed analog amps producing double rate DSD

Data Handling Format PCM or DSD PCM or DSD Sample rate (PCM) 44.1kHz, 48.0kHz, 88.2kHz, 96.0kHz, 176.4kHz, 192kHz, 352.8kHz 44.1kHz, 48.0kHz, 88.2kHz, 96.0kHz, 176.4kHz, 192kHz, 352.8kHz; 705.6kHz Word length (PCM) 16b, 18b, 20b, 24b 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 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. effectively 100%, residual immeasurable. No input PLLs, FLLs. Input Processing 170MHz 225.792MHz Signal Processing 50MHz 56.448MHz Synchronous Upsampling, all inputs 28.224MHz 56.448MHz for 48k, 96k or 192k; 11.2896MHz for all others Digital Processing S/N ration >146 dB Upsampling > 210dB, volume control and Sigma Delta Modulator: > 330dB Digital Volume Control Zero loss of precision Zero loss of precision Analog Conversion method Delta Sigma (DSD) Single-bit double rate low pass filter DSD256 (quad rate DSD: single bit DSD at 11.2896MHz) I2S Digital Input Connector HDMI HDMI Format PCM or DSD. DoP on all inputs as well as raw DSD on I2S inputs PCM or DSD. DoP on all inputs as well as raw DSD on I2S inputs USB Digital Input Connector USB “B” Type USB “B” Type Format PCM or DoP v1.1 (DSD over PCM) PCM, DoP v1.1 (DSD over PCM), or Native DSD Transfer mode Asynchronous Asynchronous

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