Audiophile, High Quality T-DAC, RPi-DAC

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Overview Schematics RPi-DAC-RCA+ Raspberry-Pi RPi-DAC-Dual RPi-DAC-SPS RPi-DAC-SPDIF RPi-DAC-FPGA RPi-DAC-IF Order

DAC Module for High Quality USB Sound, Raspberry Pi, Audiophile Products

  • 24bit DAC, Opamp I/V Conversion, Stereo Headphone Amplifier (also for RCA)
  • State-of-the-art components on small footprint PCB, fits directly with Raspberry Pi
  • SingleStereo DAC solution with I2S Interface, On-Board Low Noise LDOs
  • Best in class parameters [1]:
    SNR:  > 120dB
    THD+N:  < 0.0006%
    Low Noise:  < 5µV/sqrt(Hz)
    PSRR:  < -82dB
  • No additional Power Supply, just AC transformer required
  • no heat sink needed (PCB used)
  • external filtering possible (connecting a FPGA)
  • Upsampling, Dynamic Range Expansion, Volume Control ... (with FPGA)
  • Dual DAC (DualMono) available (even higher SNR)
  • Interface module for enclusore, including balanced XLR, RCA, 4 inputs
  • Wireless audio from smartphone via Bluetooth module
  • cap-free transmission path

RPi-DAC, T-DAC is a highly modular concept and implementation of a high quality audio DAC

Do you want to listen to your favorite songs with the best in class sound quality?
Do you like to enjoy a high quality, audiophile DAC on your Raspberry Pi or any other SoCs?
Or are you thinking about an FPGA DSP project, e.g. XynergyXS, CmodS6 and you need an analogue sound output?

Here is the solution: T-DAC, RPi-DAC.

T-DAC, RPi-DAC is a module system equipped with state-of-the-art TI components, e.g.:
PCM1794A (DAC), LME49990 (OpAmp), TPS7A4700 (LDO), TPA6120A2 (LineDriver)

RPi-DAC-RCA, RPi-DAC-RCAplus is a cost-effective and option rich version of the HifiBerry used with the Raspberry Pi B and Raspberry Pi B+. Start with it and upgrade any time to higher audio quality.

RPi-DAC is optimized to be connected directly with Raspberry Pi, works with latest Rasbian (RPi-DAC drivers are part of Rasbian now)

kernel/image as well as with the new Volumio

RPi-DAC can also be used with STMF4 Discovery, STFM4 Disco as USB Sound Card

There is also a SPDIF/TOSLINK/XMOS-USB module available which makes it possible to use RPi-DAC on an iMAC or a Cubox (Cubie).

It is intended to be used on an XynergyXS FPGA board (with Xilinx FPGA, STM32 F4, DDR memory, SD card) in order to develop a standalone sound processing solution and HQ USB Sound Card.

The option to use a Cmod S6, Xilinx Spartan 6 FPGA for audio filtering is available.

There is an interface module to put all together in an enclosure, with full balanced XLR out, RCA out and several input options.

The T-DAC, RPi-DAC can be extended by a wireless RN52 Bluetooth module (via I2S or S/PDIF).

T-DAC and RPi-DAC makes use of SMD circuits and components in order to realize a small footprint.

There is also a Dual-Mono configuration with improved SNR parameter.

Almost all modules have an onboard rectification so that a simple low voltage AC input (just transformer) can be used.

© June 2014
Torsten Jaekel
email: tj[]
[1] based on circuit datasheets and specs