Works with the ODROID-C2 / C1+. This is not compatible with the original ODROID-C1.

The HiFi Shield Plus provides both stereo RCA connectors to connect to external amplifiers and other audio equipment. Via TI's high-end PCM5242 DAC chip(known as Burr-Brown), it supports 16, 24, 32 bit audio formats with minimal THD+N ratio (0.002%) and ideal dynamics (114dB+), plus amazing sampling rates of 384kHz

One dedicated S/PDIF interface supports up to 192kHz/24bit resolution via Optical (Toslink) output.

Using the I2S expansion port on the C2 / C1+, we save a USB port and allow the user to select their audio playback system of choice, such as Volumio, Debian(DietPi) for HiFi audio playback. 
 

Functional introduction : 1. Volume control via I2C interface is great feature to keep the great audio quality with various audio output volume.  2. The output ports include gold-plated stereo RCA terminals 3. An ultra-low noise dropout regulator is populated for the power supply, significantly reducing power supply noise and greatly increasing the signal to noise ratio. 4. The I2S interface allows for direct decoding of the digital input to analog output using master clock synchronization. 5. The PCB surface is comprised of gold-plating on top of 2 oz. of copper, ensuring signal continuity and reducing signal reflection and refraction. 6. Balanced(differential signal) audio output soldering pads are available. 7. The dedicated S/PDIF interface is newly added which supports up to 192kHz/24bit resolution via new Optical (Toslink) output. - Ubuntu/Linux setup guide for ODROID-C2 : HERE / for ODROOID-C1+ : HERE - Official Volumio 2 OS support : https://volumio.org - Debain based DietPi : HERE - PCB mechanical drawings (AutoCAD format) : Download HERE - Schematics : Download HERE     Package include - HiFi Shield 2 Board   BOARD DETAIL The audio output is the other way as standard. Red : Left, White : Right BLOCK DIAGRAM ODROID-C2 / C1+ 7PIN I2S PINMAP ODROID-C2/C1+ 7pin Layout HEADER Label 1 GND 2 I2S Data In (for ADC) 3 5V 4 I2S MCLK (Master Clock) 5 I2S LRCLK (LR Clock) 6 I2S SCLK (Bit Clock) 7 I2S Data Out (for DAC) The HiFi Shield 2 is a high-resolution Digital to Analog Converter(DAC) for the ODROID-C2 and ODROID-C1+. This is a special sound card for the C2 and 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 2 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 2 is connected to the equipment and measurement data shows on the host PC. Test conditions Volumio 2.002 image runs on the Odroid-C2 with HiFi-Shield 2.  192KHz audio test files were used. Audio Precision Input : Analog unbalanded 2ch, 600ohm Hardware volume/mixer settings Analogue : -6.00 dB (amixer -c 1 sset Analogue 0) Digital : -3.00 dB (amixer -c 1 sset Digital 201) Deemphasis Filter : On (amixer -c 1 sset Deemphasis on) Software volume settings Volumio UI volume : software volume 100 (maximum full scale)   Set-up with ODROID-VU5   Set-up with ODROID-3.5inch Touchscreen Shield   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 Frequency sweep THD+N Ratio    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.

   Note: 

The supplier of the product has no replacement and/or refund policy as part of their product warranty/guarantee. Furthermore, the repair cost and the cost of shipping to and fro from South Korea has to be borne. As Fab.to.Lab is merely an intermediary we extend the exact same warranty terms to all customers of Harkernel.

Please find more details here: Supplier warranty terms and conditions: https://www.hardkernel.com/agreement/