Description
Raspberry Zero I2S soundcard developed by High-End Audio enthusiasts in the purpose of making an extremely good DAC for HiRes audio.
SABREberry Zero utilizes the ES9023 Digital Analog Converter from ESS Technology Inc. Having this on board,
this I2S DAC not only plays excellent at all sampling rates. Even in the Champions League for HiRes audio files,
it scores with up to 112dB DNR with aplomb. But even with compressed music sources from around 190 kBit/s,
an impressive gain in sound performance can be experienced.
A precice on-board 49.152 MHz 25ppm oscillator enables this soundcard to decode music with up to 192kHz
independently in low-jitter, asynchronous mode. In addition, the ultra-low-noise power regulator LDO prepares
the required voltage with only 11.5µVRMS in an optimal manner.
Hardware and Software
40 PIN GPIO
SABREberry Zero utilizes I2S signals BCLK (GPIO18 PIN12), LRCK (GPIO19 PIN35) and DataOut (GPIO21 PIN40).
A very precise masterclock MCLK is generated by SABREberry itself.
I2C connection to SABREberry is not required.
SABREberry DAC is compatible to HIFIberry DAC.
Description for OSMC (Linux with KODI)
| My OSMC -> Pi Config -> Hardware-support -> Soundcard Overlay -> hifiberry-dac-overlay |
| My OSMC -> Pi Config -> Hardware-support -> LIRC GPIO Support -> DISABLE |
| Reboot |
| Settings -> Sytem -> Audio Output -> Audio Output Device -> ALSA:Default |
Now, music streamed in local network to osmc (UPnP media renderer), it is played-back with SABREberry.
Description for Raspian
| sudo nano /boot/config.txt -> insert dtoverlay=hifiberry-dac |
| sudo nano /usr/share/alsa/alsa.conf -> replace defaults.ctl.card 0 by defaults.ctl.card 1 |
| sudo nano /usr/share/alsa/alsa.conf -> replace defaults.pcm.card 0 by defaults.pcm.card 1 |
| sudo nano /etc/asound.conf -> insert following lines |
| pcm.!default { |
| type hw |
| card 1 |
| } |
| ctl.!default { |
| type hw |
| card 1 |
| } |
| sudo reboot |
Output Levels
Autosensing from 2VRMS to 1VRMS at 30Ω.
Amplifiers can be connected either to the 3.5mm headphone jack or to the optional RCA sockets.
Amplifiers will be supplied by SABREberry Zero with usual 2V RMS.
Maximum Volume of connected headsets is impedance-dependent.
Headsets usually have an impedance between 32Ohm and 250Ohm. Small headphones with higher impedance run
at good volume with SABREberry and are preferred for perfect sound (no additional amplifier section).
