AK4137 DAC Board SRC Board Digital High-End Audio 786K 32Bit DSD256 DSD IIS Conversion

AK4137 DAC Board SRC Board Digital High-End Audio 786K 32Bit DSD256 DSD IIS Conversion

Description:
The SRC audio dedicated chip AK4137EQ is the core design. The chip supports 32bit 786K, DSD256 input, asynchronous up-conversion. It can set fixed output in multiple PCM and DSD formats. With AK4118 as coaxial signal reception, with the industry's lowest Jitter, through MCU soft control is fully optimized, and the performance is much higher than WM8805 DIR9001 CS8416.

Features:
- Crystal oscillator independent power supply
- Double crystal oscillators us different crystal frequency according to output sampling, and the board is equipped with ordinary standard crystal oscillator.
- There are 5 inputs: BNC RCA fiber, AES, USB input (applicable to our XMOS module / Italian USB)
- Use XMOS module / Italian USB can be directly installed on the board, can achieve sampling display, support full frequency automatic switching
- Double-row 20-pin output interface is compatible with Italian USB output interface, can directly connect to DSC1 such decoding board
- Four sets of filters can be set
- Use LCD1602 to display working status
- All settings are automatically saved

The sampling frequency indicates the output level is as follows:


Key Description:
- Short press: switch input channel
- Long press (greater than 0.5 seconds): enter setting options / switch options
* Set option loop (long press):
- Normal state---filter parameter setting---output signal format---output signal sampling frequency---normal state
 
Input:
- BNC RCA fiber, AES: 44.1K-192K 24BIT
- USB (using XMOS module): 44.1K-384K 32BIT/ DSD64, DSD128, DSD256
 
Note: The product does not include XMOS module or Italian USB module, please purchase it separately.
 
Output:
- Asynchronous output: PCM 44.1K~384K/DSD64/DSD128 / DSD256 (When DSD64 is switched to 44.1K/48K, there is a possibility of increased noise floor)
- Supply voltage: regulated 5 V, working current is about 100MA
- Output sampling indication (F0-F2 is as follows, F3 is always 0)

Package Included:
- 1 x DAC Board


Display and Function Description:
1.Input channel: COAX BNC,cOAX RCA, USB, OPTICAL, AES/EBU
2.Input signal format: PCM, DSD (Real-time display based on input signal)
3. Sampling frequency of the input signal(Real-time display based on input signal)



4.Mute

Description of J1 &J2 Jumper Function:
- J1 connection: MCLK signal is provided by AK4137,
- J2 connection: The MCLK signal is directly provided by the crystal oscillator.

Note: J1 and J2 can not be used at the same time. Please connect just one while using. Thank you!