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Accuphase DC-37 - MDSD Digital Processor

    • Key Specifications

      • Type: High-end digital-to-analog converter (DAC) and processor

      • DAC Architecture: MDSD (Multiple Double Speed DSD) with eight parallel DAC circuits per channel

      • Supported Formats:

        • DSD up to 5.6448 MHz (1-bit, 2-channel)

        • PCM up to 384 kHz / 32-bit

      • Inputs: 6 digital interfaces — HS-Link, Coaxial 1, Coaxial 2, Optical 1, Optical 2, USB

      • Outputs: Balanced (XLR) and unbalanced (RCA) analog outputs

      • Frequency Response: 0.5 Hz – 50 kHz

      • S/N Ratio: Approx. 119 dB

      • THD: Approx. 0.0006%

      • Dynamic Range: Around 116 dB

      • Power Supplies: Independent transformers and circuitry for digital and analog sections to minimize interference

Description

The DC-37 inherits the outstanding technology of the DC-901 and DP-720 while opening a new chapter in ultra-advanced and innovative digital signal processing technology. It features an MDSD type D/A converter that achieves straight conversion of the DSD signal and supports 5.6448 MHz (1-bit 2-channel DSD) sources. In keeping with this development, the HS-LINK interface has also been upgraded to Version 2 with significantly expanded sampling frequency and quantization support up to 5.6448 MHz (1-bit 2-channel DSD) and 384 kHz (32-bit 2-channel PCM). The DC-37 also offers convenience and flexible functionality. External digital sources can be connected via a total of six digital inputs: HS-LINK, COAXIAL 1, COAXIAL 2, OPTICAL 1, OPTICAL 2, and USB. The DC-37 is a digital processor that redefines the state-of-the-art and has its sights firmly set on the future, including computer-based and high-resolution audio. Only strictly selected circuit components, materials, and other parts of the highest quality are used, resulting in an immense richness of information that translates into a spectacular musical experience.

Warranty:

1-year manufacturer’s warranty

Features:

  • MDSD type D/A converter using eight parallel circuits
  • Direct Balanced Filter with totally separate line and balanced signal paths
  • Support for 5.6448 MHz (1-bit 2-channel DSD) and 384 kHz (32-bit 2-channel PCM)
  • Six digital interface inputs, including HS-LINK and USB
  • Phase selector for balanced outputs
  • Sampling frequency and quantization bit display for the  input signal
  • Separate power transformers for digital and analog sections

The DC-37 inherits the outstanding technology of the DC-901 and DP-720, while opening a new chapter in ultra-advanced and innovative digital signal processing technology. It features an MDSD type D/A converter that achieves straight conversion of the DSD signal and supports 5.6448 MHz (1-bit 2-channel DSD) sources.

In keeping with this development, the HS-LINK interface has also been upgraded to Version 2 with significantly expanded sampling frequency and quantization support up to 5.6448 MHz (1-bit 2-channel DSD) and 384 kHz (32-bit 2-channel PCM). The DC-37 also offers convenience and flexible functionality. External digital sources can be connected via a total of six digital inputs: HS-LINK, COAXIAL 1, COAXIAL 2, OPTICAL 1, OPTICAL 2, and USB.

The DC-37 is a digital processor that redefines the state-of-the-art and has its sights firmly set on the future, including computer-based and high-resolution audio. Only strictly selected circuit components, materials, and other parts of the highest quality are used, resulting in an immense richness of information that translates into a spectacular musical experience.

Technical Specifications:

Digital

Inputs

HS-LINK

Connector Type Suitable Cable

RJ-45 Dedicated HS-LINK cable

COAXIAL

Format Suitable Cable

IEC 60958 AES-3 compliant 75-ohm coaxial digital cable

OPTICAL Format Suitable Cable

JEITA CP-1212 compliant

(480 Mbps) Compliant JEITA standard optical fiber cable

USB Format Suitable Cable

USB 2.0 Hi-Speed (480 Mbps) compliant USB 2.0 cable with Type B connector

Sampling Frequencies HS-LINK

32 kHz, 44.1 kHz, 48 kHz, 88.2 kHz, 96 kHz, 176.4 kHz, 192 kHz, 352.8 kHz, 384 kHz (16 to 32-bit 2-channel PCM)

2.8224 MHz, 5.6448 MHz (1-bit 2-channel DSD)

COAXIAL

32 kHz, 44.1 kHz, 48 kHz, 88.2 kHz, 96 kHz,

176.4 kHz, 192 kHz (16 to 24 bit 2-channel PCM)

OPTICAL 32 kHz, 44.1 kHz, 48 kHz, 88.2 kHz, 96 kHz

(16 to 24 bit 2-channel PCM)

USB 32 kHz, 44.1 kHz, 48 kHz, 88.2 kHz, 96 kHz, 176.4 kHz, 192 kHz, 352.8 kHz, 384 kHz (16 to 32 bit 2-channel PCM)

2.8224 MHz, 5.6448 MHz (1-bit 2-channel DSD)

D/A Converter MDSD principle (DSD signal)

MDS++ principle (PCM signal)

Frequency Response 0.5 to 50,000 Hz +0, -3.0 dB
Total Harmonic Distortion 0.0006% (20 to 20,000 Hz)
Signal-to-noise Ratio 119 dB
Dynamic Range 116 dB
Channel Separation 117 dB (20 to 20,000 Hz)
Output Voltage and Impedance BALANCED LINE

2.5 V 50 ohms, balanced XLR type 2.5 V 50 ohms, RCA phono jack

Output Level Control 0 dB to -80 dB (digital)
Sampling frequency /

Quantization bit display

2-channel PCM

32 kHz, 44.1 kHz, 48 kHz, 88.2 kHz, 96 kHz,

176.4 kHz, 192 kHz, 352.8 kHz, 384 kHz

0 to 32 bit (0: No data)

2-channel DSD

2.8224 MHz, 5.6448 MHz

1 bit

Power Requirements 120 V, 220 V, 230 V AC (voltage as indicated on rear panel), 50/60 Hz
Power Consumption 10 W
Maximum Dimensions Width 465 mm ( 18.31”)

Height 114 mm ( 4.49”)

Depth 385 mm ( 15.16”)

Mass 14.4 kg (31.7 lbs)

20.0 kg (44.1 lbs) in shipping carton

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