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ATDAC-8 (discontinued)

USB Powered 384kHz/24bit PCM Galvanic Isolated Audio DAC

Based on XMOS and Texas Instrument PCM5102A.

Only high quality components used, from the world known companies and reliable suppliers: Xmos, AKM, Silicon Labs, Texas Instrument, Analog Devices, Elna, Nichicon, Murata.
Main features:

  • Up to 384kHz sample rate
  • USB Audio Class II Operation:
    • not required drivers for MacOS, Linux, Android.
    • required driver for Windows
  • Full galvanic isolation from USB source (PC, Tablet, etc.)
  • 2Vrms output
  • RCA output
  • Additional 3.5mm jack output for headphones *.
  • No need external power supply in most applications **.
  • For special applications, external power supply input with reverse polarity protection provided ***.

* - Phone output is additional, for high quality sound use RCA with external head amplifier. If use Phone output  don't forget to enable the digital volume control in your player.

** - Using with cellular phone or tablet will quickly discharge it's battery, so using external power supply is recommended. Also if you want to use very long (>1.5m) USB cable.
ATDAC-8 power consumption is about 0.55A, which is a little bit more then the regular USB port provides according to the standard. But I never seen USB port, not satisfied ATDAC-8 with it's current, at least with the short (<0.5m)  USB cable.
However, it is better to us USB cable as short as possible. Also not use very thin USB cables ("Chinese no-name").

*** - External power supply requirements:  5VDC (+0.5, -0.2V), 0.6A at least

Reminder - DAC's output is primary dedicated to amplifier connection. If you want to use headphones, use external high quality  headamp. Due to a lack of power which can be consumed from USB, DAC's Phone Output sounds good just at the low volume.