APL HiFi DSD-M Master Reference Pure DSD DAC W / DTR-M Master Transport

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A dealer in Sweden says that one of their most ambitious D / A converters is the APL HiFi DSD-M. They go on to say “We have not yet heard a device that combines the same combination of extreme transparency and dynamism with this degree of naturalness, flow and genuinely organic qualities”

This ad is for the DSD-M DAC and the DTR-M Transport and price is for both pieces. The units are three years old and in superb operational and cosmetic condition.

The DSD-Master is the top-line Digital to Analog converter, specifically made for the most enthusiastic audiophiles. It is an all-hand-made boutique, designed and built with the best possible audio quality in mind, cost-no-object. Inspired by reference vinyl sound quality, the DSD-M pleases with a very natural sonic character that is truly unique.

It represents the culmination of our 25 years digital and analog design experience, as well as component selection knowledge.

From the quadruple DSD processing rate, to the differential Class A tube output stage, the DSD-M proves technology and refinement of the highest level.

Digital Processing

Proprietary asynchronous USB input module accepting DSD64 and DSD128 only.
Proprietary PCM to DSD converter module with DSD64, DSD128 and DSD256 capabilities, user selectable.
Proprietary Pure DSD Digital to Analog conversion module. No off-the-shelf devices.
S/PDIF digital input module accepting up to 200kHz/24bit PCM, further converted to DSD.
Ultra-low-jitter Master Clocks.
Special 7-pin digital input for connecting our DTR-M digital transport.
RJ-45 input jack for Pure DSD input, similar to I2S connection.

Analog Output Stage

Custom Lundahl output transformers with Oxygen Free Copper windings.
Pure Class A, Differential tube stage featuring the vintage E182CC tubes.
Entirely passive current to voltage conversion and DSD analog filtering.
Zero Negative Feedback.
Non-magnetic resistors.
No capacitors on the signal path.
No Op Amps or any other solid-state components on the analog signal path.
No mechanical contacts, relays or switches on the signal path.
Solid core Oxygen Free Copper internal wiring.

Power Supply

Oversized Custom P-Core balanced main power transformer.
Optically controlled, mechanical-contacts-free devices for main power switching control.
Delayed High-Voltage supply, after tubes warm-up, for increased tubes life.
High quality Lundahl choke for tube power supply.
High grade, specially selected rectifiers and passive components.
Convenience and mechanical

Large LCD display.
Microprocessor control with last settings memory.
Infrared Remote milled from solid Aluminum blocks.
All-Aluminum enclosure with machined 10 millimeters thick front panel.

Digital Inputs

Two S/PDIF Coaxial digital inputs with WBT RCA connectors.
AES/EBU professional standard balanced digital input.
Note! S/PDIF and AES/EBU accepting up to 200kHz/24bit PCM.
PCM rates from S/PDIF and AES/EBU are converted to DSD64, DSD128 or DSD256, user selectable.
USB input accepting DSD64 and DSD128 in DoP format. No PCM.
DTR input for our DTR-M accepting DSD64, DSD128 and DSD256.
DSD input accepting DSD64, DSD128 and DSD256, similar to I2S.

Analog Outputs

Single Ended RCA outputs with WBT RCA connectors.
Balanced XLR outputs with Neutrik connectors.
Note! RCA and XLR outputs can not be used simultaneously.
Output level - 2.3V RMS at 0dBFS.
Output impedance - approximately 25 Ohms.

Power input and fuses

IEC power inlet made by Furutech.
115V or 230V / 50-60Hz, factory pre-set.
Other power input voltages available on request.
0.1A fuse for standby power supply.
2A special Gold fuse by AMR for main power supply.

Dimensions and weight

W435 x H130 x D320 millimeters.
Front panel width - 450 millimeters.
Height with feet included - 160 millimeters.
Weight - 14.5kg unpacked.