- Package: No
- Channels: 1
- Model Number: Raspi AK4137
- Maximum Power Per Channel: NO POWER
- Brand Name: Amiyalo
- Origin: Mainland China
- Certification: NONE
- Type:: Network Player
Support VOLUMIO or MOODE playback system!
This board supports output I2S signal 16-32bit 44.1-384K! DSD signals support DSD64 DSD128 DSD256! Support DOP to DSD/I2S!
The main function of this board is to improve the quality of the Raspberry Pi I2S signal and reduce jitter. And make up for the Raspberry Pi I2S output without MCLK! The original I2S output of the Raspberry Pi does not have MCLK and most high-performance DACs require MCLK to work. And the AK4137 reconstruction clock reduces the Raspberry Pi output signal jitter enhancement.
This board supports Raspberry Pi 2B 3B 3B+
The method of use is to insert the board directly on the raspberry pie as the main picture, and fix it with a screw and copper column. The Raspberry Pi has a good VOLUMIO playback system that can be used up and configured.
Turn on the I2S DAC with the VOLUMIO playback system. Use the HiFiBerry DAC driver! DSD playback is generally set to DSD direct / DSD direct connection! It can also be set to DOP mode, but DOP mode is recommended to use only when playing DSD. DOP mode is not recommended when DSD and PCM are mixed. And the performance of 4137 does not affect the playback effect.
The system supports playing U disk, mobile hard disk, memory card, songs on NAS, and also supports wireless play such as AirPlay, QQ music Qplay (can be used instead of Bluetooth).
According to the performance of the latest version of the Raspberry Pi 3B+, this solution supports playback of commonly used audio file formats such as WAV APE FLAC MP3, and DSD supports DSF DFF suffix files.
VAV APE FLAC MP3 and other files support up to 32bit 192K playback APE FLAC supports the highest compression playback available.
DSD files support playback of DSD64 DSD128 DSD256.
Two ways to supply power:
1.uses the micro usb to power the Raspberry Pi. This board takes power directly from the Raspberry Pi pin.
2.The second method can power the entire system from the 5V port of the board without using the raspberry pie microusb.
The two power supply modes can only be used one at the same time ,and cannot be used at the same time! Power supply is recommended to more than 5V 2.5A.
Package:
It only contains the blue board on the main picture (the finished board is soldered and tested for delivery) and the screw copper column. It does not contain other accessories such as the Raspberry Pi memory card!
Introduction to board function settings (K port):
1. Set the output mode through K port No. 1 No. 2 (K1, K2) See the following table
2. Set the output bit number of the PCM output mode by K3 K4. See the table below.
3. Set the sampling rate of the PCM output mode. Set by K5 K6 K7.
4, set the filter mode through K8 K9 settings See the table below
5, DOP mode setting through K10 settings
Short-circuit K10 to turn on DOP mode, disconnect K10 to turn off DOP mode
VOLUMIO can only output DOP when playing DSD. It is also recommended to use DOP mode only when listening to DSD. You can create a DSD playlist separately. DOP is not recommended if PCM and DSD are mixed.
installation instructions:
It should be noted that the gasket should be installed under the four copper columns of A B C D as shown in the figure below (the gasket screw copper column is shipped with the belt)
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