Allo- The Best Sound

Allo USBridge Signature


USBridge Sig was build using RPI compute module so from a software point of view, this will give you access to the latest kernels (way ahead of any competitor). The focus of the device is to lower the noise on USB bus. We chose an excellent USB hub IC (TI) and a separated Ethernet to USB Ic (Axis).

To lower the noise of the USB, we had to lower noise on EACH rail. In total, USBridge Sig uses more than 30 LDOs. Even the SD card power rail has a dedicated LDO. There are zero switching elements on board.

Of course, since this is based on  RPI compute, we decided to include the standard RPI connector. Anything that works on an RPI will work on the USBridge Sig. For example, you can use a DigiOne / DigiOne Sig to make a full fledged streamer that outputs USB, BNC and coaxial.

  • Audio output on USB is full 512 DSD / PCM 768Khz (DSD 1024 theoretically possible)
  • 10 layers PCB
  • 30+ LDOs on board
  • RPI connector compatible with any HAT PCB
  • 3 USB ports, 1 reserved for DAC, 2 for WIFI/BT dongles
  • Ethernet Speed tested at 330Mbs
  • DietPi + ALLO GUI preinstalled


  • 3 x USB 2.0 Host: 1 on rear side marked as USB CLEAN, 2 on front side marked as Wi-Fi/BT
  • (USB 2.0 ports capable of delivering up to 900mA)
  • 1 x HDMI (Rear side)
  • 1 x Gigabit Ethernet Port (AX88179 chipset)
  • MicroSD card slot for OS (8GB or above)
  • Power: 5V/3A through USB-C connector
  • DigiOne Signature Clean Power: 5V/1A adaptor source or battery pack power 5v to 9v range
  • LED Status: power (PWR) green led shows the power status and ACT red led shows the SD card activity

Note: All USB host ports have an over current protection circuit.

Support & Downloads

All Allo products are FINAL SALE.  We are not able to provide support on these items.  For support, please visit Allo's customer support forum.