DSD-SR MK2

Pure DSD, Reference all-solid-state Digital to Analog converter with a transformer-coupled Class-A output stage

INFORMATION

The DSD-SR MK2 is specifically made for those enthusiastic audiophiles who search for the most natural and analogue-like digital audio reproduction offered by an all-solid-state DAC design.

It is an all-hand-made boutique, designed and built with the best possible audio quality in mind for its price-range.

Just like the DSD-MR MK2 reference converter, the DSD-SR MK2 is inspired by vinyl sound quality, and it provides a comparable rich and spacious sonic character.

From the quadruple DSD processing rate, to the transformer-coupled Class A output stage, the DSD-SR MK2 offers a high level of technology advancement and refinement.

The DSD-SR MK2 is based on a modular design, allowing a cost-effective future upgradability of any internal stage.
Digital Processing
  • Proprietary asynchronous USB input module accepting PCM rates up to 384kHz/32bit and up to DSD256.
  • Proprietary PCM to DSD converter module with DSD128 and DSD256 capabilities, user selectable from the remote.
  • S/PDIF digital input module accepting up to 192kHz/24bit PCM.
  • All PCM rates from the digital sources are converted to DSD, prior to D/A conversion.
  • Pure DSD Digital to Analog conversion module.
  • Paralleled Flagship DAC devices working in Mono DSD-only mode and special Class-A operation we have developed.
  • Attenuator offering a non-decimating volume control with a 0.5dB step.
  • Ultra-low-jitter Femto Master Clocks.
  • Proprietary DTR inputs intended for connecting our DTR-MR digital audio transport and DNP-SR network streamer.
Analog Output Stage
  • Class-A, transformer-coupled output stage featuring special Lundahl audio transformers with amorphous core and OFC windings.
  • Zero Negative Feedback design output stage.
  • No Op Amps on the signal path.
  • No mechanical relays or switches on the signal path.
  • Solid core Oxygen Free Copper internal signal wiring.
Power Supply
  • Oversized Custom P-Core balanced main power transformer.
  • High grade, specially selected rectifiers and passive components.
  • Solid Copper wiring for power supply.
Convenience and mechanical
  • FLD display with custom selectable Red, Blue or Green colors. Please specify when ordering.
  • Microprocessor control memorizing last settings, including volume level for each input.
  • Infrared Remote milled from solid aluminum blocks.
  • Very solid all-aluminum, precision machined enclosure.
Warranty
  • 2-years warranty with an available 3-year warranty extension, with an online product registration.
    Please visit http://aplhifi.com/register/
Digital Inputs
  • Two S/PDIF Coaxial digital inputs.
  • AES/EBU professional standard balanced digital input.
  • Note! S/PDIF, AES/EBU and Optical accepting up to 192kHz/24bit PCM.
  • USB input accepting up to 384kHz/32bit PCM, up to DSD128 in DoP format and up to DSD256 in NativeDSD format.
  • Note! Both 44.1kHz and 48kHz base frequencies are accepted for DSD.
  • Two Proprietary DTR inputs allowing connection to DTR-MR and DNP-SR.
Analog Outputs
  • Single Ended RCA outputs. Output level 2.4V RMS.
  • XLR outputs. Output level 2.4V + 2.4V RMS.
  • Output impedance – approximately 150 Ohms, resistor limited.
Power input and fuses
  • IEC power inlet with NCF technology by Furutech.
  • 120V or 230V / 50-60Hz, factory pre-set.
  • Other power input voltages available on request.
  • 1A special ceramic fuse for main power transformer.
Dimensions and weight
  • W435 x H80 x D280 millimeters.
  • Front panel width – 450 millimeters.
  • Height with feet – 110 millimeters.
  • 12kg unpacked.
Included Accessories
  • Infrared Remote Control.
  • User Manual.
  • Certificate of Authenticity.

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