|Works with the ODROID-C2 / C1+. This is not compatible with the original ODROID-C1.|
The HiFi Shield provides both stereo RCA connectors and a 3.5mm stereo jack (all gold-plated) to connect to external amplifiers and other audio equipment. Via TI's high-end PCM5102 DAC chip, it supports 16, 24, 32 bit audio formats with minimal distortion (-93dB) and ideal dynamics (110dB+), plus amazing sampling rates of 384kHz.
Using the new I2S expansion on the C2 / C1+, we save a USB port and allow the user to select their audio playback system of choice, such as Volumio, RuneAudio or XBMC/Kodi for HiFi audio playback.
1. The 7 pin map on C1+ board is reversed.
2. Pin 3 is 5V power. The print on the PCB is 3V3 which is incorrect.
ODROID-C2 / C1+ 7PIN I2S PINMAP
Feel the sound!! The nostalgic 20 year-old Macintosh analog amplifier meets 21st century audiophile.
The C2/C1+ HiFi Shield is a high-resolution Digital to Analog Converter(DAC) for the ODROID-C1+. This is a special sound card for the C1+, that is optimized for the best fidelity audio playback quality. It delivers a nicely balanced sound, solid, deep, wide and nicely layered.
We've analysed the the audio quality of the HiFi Shield DAC output with the famous industry standard equipment, Audio Precision. The Audio Precision is a high performance audio analyser optimized for the digital audio product.
The analog output of the HiFi Shield is connected to the equipment and measurement data shows on the host PC.
This picture shows a basic configuration of the set-up. Note that I disconnected the external amplifier when we measured the line-out audio quality.
|The Signal to Noise Ratio (SNR)|
The Noise Level in dBm
The Frequency Response and RMS output level in dBV
The Total Harmonic Distortion + Noise Ratio (THD+N)
|The FFT spectrum analyzer for 1Khz signal|
This is a great idea if you want an audiophile set-up with ODROID-C2/C1+. Enjoy a variable output connecting directly into a power amp or active speakers.