NOTE:

Raspberry pi not included.

Raspberry pi doesn't support ES9028Q2M（DAC chip）, but X10-I2S Board in this kit supports this function.

Raspberry pi I2S doesn't support DSD format, but X10-I2S Board in this kit supports this function.

Package Includes:

1 x X20-DAC Expansion Board(with Installation Screws)

1 x X10-PWR Power Supply Board(with Installation Screws)

1 x X10-I2S Board(with Installation Screws)

For Use With:

- Raspberry Pi 3 Model B+ / Pi3 Model B/ 2B / B+

Operating System:

- Volumio

- Moode Audio Player

[X20-DAC BOARD] Features:

- ESS Technology flagship DAC chipset (ES9028Q2M) for best sound quality

- 129dB DNR -120dB THD+N

- 32bit/384kHz Bit to Bit Playback & Native DSD Playback (Use with our XMOS I2S module)

- JRC MUSES8920 high quality Audio J-FET input dual OP AMP

- Ultralow phase noise 100MHz HiFi TCXO

- Texas Instruments ultra-low-noise voltage regulator

- Dedicated individual DVCC, AVCCL, AVCCR, Oscillator 3.3V power supply

- Selected high quality components (WIMA Film capacitor, Panasonic low ESR aluminum electrolytic capacitor, Gold-plated RCA connectors etc)

- Can connect to our XMOS USB-to-I2S module directly

- Can be used individually with only 3 wire I2S signal connected from other i2s interface

- All dual OPAMP in single dip8 package IC can be used

- High performance and compact Raspberry Pi DAC solution for everyone

Specification:

- Power supply: +5Vdc ±5%, +15Vdc ±5%, -15Vdc ±5%

- Analog audio output level: 2V RMS

- Resolution/Sampling Rate: Up to 24bit / 192KHz (Raspberry Pi I2S)

Up to 32bit / 384KHz (Use with XMOS USB to I2S board)

DSD64 /DSD128 (Use with XMOS USB to I2S board)

PCBA size : 101.5 x 56mm x 34.5mm, PCB size : 85 x 56mm

X10-PWR POWER SUPPLY BOARD:

Features:

- Fully regulated linear power supply board for X10 / X20 series DAC

- Texas Instruments ultralow noise TPS7A470x regulator

- Four individual 5.2V/ 5.0V/-15V/+15V to power the Raspberry Pi (1), DAC chipset and OPA

- High performance ELNA and Nichicon Audio Purpose Capacitors

- For use with R-core transformer

Specification:

- Input rating : 6VAC ±5% 2.5A, 6VAC ±5% 0.5A, 15VAC ±5% 0.55A, 15VAC ±5% 0.55A

- Output voltage：5Vdc ±5% 2.5A, 5Vdc ±5% 0.5A, +15Vdc ±5% 0.5A, -15Vdc ±5% 0.5A,

- PCBA size : 85mm x 56mm x 50.5mm, PCB size : 85 x 56mm

Note:

Low voltage indicator might show up during boot, it does not affect audio performance

X10-I2S BOARD XMOS USB TO I2S/SPDIF/Coaxial

Features:

- The XMOS xCORE-AUDIO Hi-Res family of parts

- Deliver precise output with low noise/distortion for soothing, high-quality sound

- Ideal HiFi audio solution for Raspberry Pi

- Streamed through Raspberry Pi to I2S, DSD and/or S/PDIF interfaces

- PCM up to 32bit /384 KHz sample rates (see notes)

- Native DSD, DoP64 and DoP128 (see notes)

- Up to 192 kHz, 16/24 bit resolution S/PDIF output

- Asynchronous Isochronous transfer from Raspberry Pi

- Multiple OS support (Volumio, Moode Audio Player, Windows, Android etc)

- SiTime SiT8208 ultra performance oscillator

- Texas Instruments ultra-low-noise voltage regulator

Specification:

- Power supply: +5Vdc +/-5%

- CODEC: I2S 16, 24, or 32 bit PCM, DSD64 and DSD128

- PCM sample rates : 44.1, 48, 88.2, 96, 176.4, 192, 352.8, 384KHz

- Optional S/PDIF output : Up to 192 KHz; 16/24 bit resolution

- PCBA size : 101.5 x 56mm x 34.5mm, PCB size : 85 x 56mm

Note: 

Not applicable for X10-DAC. 

PCM up to 24bit /192 KHz sample rates when works with X10-DAC.

X10-HPAMP HiFi Headphone Amplifier

Features:

- Uses TI TPA6120A2 as headphone chip

- SNR of 128dB A-Weighted and THD of 112.5dB

- Current-Feedback Architecture

- The best class AB high fidelity headphone amplifier for diyer to enjoy

- Original ALPS RK27 potentiometer

- 0.1% low noise thin film resister

- 6.35mm and 3.5mm earphone output jack

Specification:

- Power supply: +15Vdc ±5%, -15Vdc ±5%

- Output power: 150MW /250, 300MW /120, 1000MW /32

- Frequency response: 20hz-30khz

- PCBA size : 124mm x 56mm x 37.5mm, PCB size : 85 x 56mm

FAQ & User Manual:

See in a description "Raspberry pi doesn't support ES9028Q2M（DAC chip）, if you want this function, please add X10-I2S Board.

"So do i really need this "optional" board or not?"

Existing operating system such as volumio, Moode Audio..etc don’t have drivers to support this DAC chipset yet. That means this X20 DAC board cannot work Raspberry Pi directly. So you will need a USB I2S interface board to make it work.

Hardware Installation: Note: R-core transformer required