APL Hifi DSD-SR MKII

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.

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.