Home Home entertainment Home automation Online Store News Shopping Cart


Accuphase DAC-40 D-A Converter Board


Please contact us for a price

Free Delivery in NZ
for orders over $100 or $5 under $100.

Product Description

Digital Input Board with USB.

DAC-40 is a D/A converter board with coaxial, optical fibre and USB inputs. It is designed for installation in a slot on the rear panel of an analog Accuphase component, to provide direct input capability for signals from digital components. Usage details of the board will differ, depending on the Accuphase component in which the board is installed. To ensure correct operation, please refer to the instruction manual of the respective Accuphase component before use.


  • An automatic change of the coax input / optical fibre /USB input
  • Automatic recognition of number of sampling frequency /bit / de-emphasis

Supplied accessories

  • USB Utility CD-ROM


  • If multiple input signals are supplied at the same time, the unit automatically locks onto a signal when"OPTION 1" is selected, using the following priority sequence: COAXIAL → OPTICAL → USB
  • To exclude a signal from being selected, either disconnect the cable or turn power of the respective equipment off.

Photo shows option board installation example

Connection example of DAC-40

Block diagram of MDS++ converter

Output level vs. Frequency Characteristic

Distortion Noise vs. Frequency Characteristic


  • IEC 60958/AES-3 compliant
  • Digital inputs 0.5Vp-p 75Ω
  • Sampling frequency 32kHz~192kHz, 24bit
  • IEC 60958/AES-3 compliant
  • Digital inputs -27~-15dBm
  • Sampling frequency 32kHz~96kHz, 24bit
  • USB 2.0 High Speed (480Mbps compliant
  • Sampling frequency 32kHz~192kHz, 24bit
The reproduction of music data by the USB depends on OS on the PC and software of music reproduction.
Please refer to the manual of the PC for setting and the connection method of the PC about USB.