Green: Only L, C, R passive device, no IC
Blue: Contains all components, which requires hand -welded customers except the patch part. PCM1794 has a dense tube and a step. Welding is difficult, and a certain welding technology and a good welding table requires.
Red: Welded the detected finished board.
The electrolytic capacitance used in the board does not necessarily vary as the market supply.
The transformer can use a group of about 30W, 15V, four -line plus a group of 9V.
PCB size: 156 width 81mm long
This product has operations, welding and other operations in the hands of customers. If you sell it, you will not be replaced. Please look at it again!
The excellent DAC board has a good indicator. The core uses the TI flagship chip PCM1794, and the USB input is PCM2706 (or PCM2707). The latest version of USB input has supported USB2.0!
Board with optical fiber(The real high -speed fiber head can be entered 24bit192K), coaxial, and USB three -way input, and carefully designed the selection of materials several times to revise it several times.(If you do n’t have a careful design, THD is about 0.02%, and the audio signal comes with a large number of harmonics. It belongs to this category when Taobao bought a few board tests. What does you understand?). Optimize the official LPF parameter plus one thousandth of the precision filter resistance and high -quality film capacitance to enable the frequency width to achieve 20KHz positive and negative 0.02DB. The table stickers are all SMD machine stickers. This board is not as large as the capacitor array machine, but the high -speed DAC circuit is actually more suitable for short -range patch components.
![](http://img.alicdn.com/imgextra/i3/49975845/TB28EFIeRyWBuNkSmFPXXXguVXa_!!49975845.jpg)
![](http://img.alicdn.com/imgextra/i3/49975845/TB2uN4TeIyYBuNkSnfoXXcWgVXa_!!49975845.jpg)
![](http://img.alicdn.com/imgextra/i3/49975845/T2PCDgXgJXXXXXXXXX_!!49975845.jpg)
![](http://img.alicdn.com/imgextra/i2/49975845/T2WBjzXzVXXXXXXXXX_!!49975845.jpg)