UAC1 HiFi Audio USB Digital Interface Support 44.1/48/96kHz PCM Output Built-in SC Cut OCXO

Description:
- The UAC-1 USB digital interface is different from the USB solutions using for Amanero or XMOS on the market. It is designed with HiFi requirements as the starting point. It is completely self-developed and does not use ordinary asynchronous or synchronous modes. It can be used for PCs, Android and Apple phones, as well as various boards for Linux and Pi.

- We have adopted a new optimization mode for the transmission of HiFi audio over USB cables, and implemented a local FIFO at the receiving end to ensure more stable data transmission and output. The use of USB data is similar to the local playback mode, which will open up a new era for PCHIFI. Even if it is only connected to a mobile phone, as long as it can ensure that it is software with source code output, it can still achieve very good playback effects.

- The UAC-1 interface uses RTOS real-time operating system dual threading, with an SC cut OCXO as the system clock to ensure super stable thread operation. Multi level and multi-channel voltage regulation design provides pure and stable supply for each part of the circuit.

- MCLK adopts two independent clocks of 22.5792/24.576MHz with an improved 957 discrete circuit, which is the basic guarantee of output quality.

- UAC-1 adopts FS level USB transmission and supports 44.1/48/96kHz PCM output. FS is more stable for low bit rate PCM transmission compared to HS.

- The USB cable of UAC-1 does not require a 5V cable, and the entire circuit uses the local power supply. Due to the built-in OCXO, please use a power supply of 7.5 to 10V with a current of 1 to 3A.

- UAC-1 has three output modes, namely SPDIF, 4SMA, I2S OVER HDMI-compatible. Please note that the output phase of the HDMI-compatible interface is + - + - + - + -.

- Due to its built-in firmware upgrade function, when the user places the switch in fixed upgrade mode, UAC-1 will be recognized as a 2MB USB flash drive. When the new firmware is placed on the drive and the switch is turned back to sound card mode, the upgrade will start. After 1 minute, the upgrade will be completed and automatically enter sound card mode. The RST button on the panel is the system reset button.

Specification:
- Size: 10 x 10 x 6.5cm

Package Included:
- 1 x USB Digital Interface