The simplest way to stream music from a Raspberry PI to an external amplifier is to connect the headphone jack to the AUX Input of the amplifier with the help of a corresponding connector cable. From a quality point of view a better approach is to use an external Digital to Analog Converter (DAC) connected to the I2S pins of the Raspberry PI and for a PI Zero this is the only way because it does not have a phone jack.
Today I received my USD $5.33 I2S DAC from AliExpress. I did not expect that this is arriving so quickly: It took less then 2 weeks to have it shipped from China to Switzerland – and this in spite of all the problems with Corona !
Naturally I wanted to test it and the easiest I figured, might be to connect it to a Raspberry PI. Unfortunately this seems to be quite tricky with Raspian, so I installed the Volumio Music Player Operating System. In the configuration I just selected the Generic I2S as output.
I was struggling a bit with the Raspberry PI Pinout:
Here are the connections on the Board:
I connected the 2 Devices as follows:
- VCC – 5V Power
- GND – Ground
- LRCK – BCM 19 (FS)
- DATA – BCM 21 (DOUT)
- BCK – GPIO 16 (CLK)
The 2 Cinch Connectors went to the Aux Input of my Amplifier and all was good!