DigiOne Signature (EU) Clean Power SPDIF Out
The Hans Beekhuyzen Channel
Video review of the DigiOne Signature on YouTube
"Excellent performance gets Allo DigiOne Signature on my recommended list."
A short film about the ALLO DigiOne Signature for Raspberry Pi
AVForums South Africa
"Well done Allo, I am impressed with this one. The DigiOne, Signature"
Audio Science Review
Independant Measuring of DigiOne and DigiOne Signature
Our regular DigiOne has no equal.
In our quest for digital perfection we asked how we can improve the design and give you the ultimate DigiOne.
First, we decided to use more board space (we are using 2 boards), the PCB area increased 220%. First board is the “dirty side” and top board has the “clean side”. With the extra space, we used the best decoupling capacitors (film) on everything that’s important (clocks, buffers, flip flops). Also, with this extra space we added a supercap on the “clean side” so most of the electrons come from this onboard “buffer” (there is so much power onboard that DigiOne Sig can run a few seconds without any power attached to the clean side).
We also decided to use 2 power supplies. The “dirty power” needs 5V /2-3A (RPI power). The “clean side” needs about 100mA and accepts from 5V to 6V. You can use anything on it, linear power supply or pure batteries power.
Thirdly, we changed the clocks to the latest from NDK (ultralow jitter SDA) that have lower phase noise than the previous generation.
The Digione Signature needs 2 PSUs to run.
You can purchase 1 x 5V 3A PSU to feed the dirty side.
We strongly recommend you purchase the battery pack or use a very good power supply for the clean side.
If you want to use the Digione Signature right away, you can purchase an additional 5V PSU from us, but we dont recommend this set up.
* Please note that all acrylic cases we ship, have a protective film (which looks like brown paper). You will need to peel this film off, in order to reveal the case. This is to prevent scratching and fingerprints during shipping.