Allo DIGIONE Player Streamer SPDIF Output Double relocking of The Digital S/PDIF Transporter Outstanding Sound Quality with BNC Audio Output Compatibility: RPI only

(621 Reviews)

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$77.99

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(10000 available )

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  • Heff

    > 24 hour

    Awesome sound as advertised ! Raspberry Pi is getting a bit toasty now, as I had to remove the top of my case that has a fan built in. Looking for a case that will fit both RPi 4 & Allo Digi One HAT that has a side mounted fan. Anyway great product

  • DValve

    > 24 hour

    I read and watched John Darkos posts on how to create a Squeezebox server and player with Raspberry Pi and a HAT. The DigiOne HAT is expensive, but probably the best one available. Ive found the sound to be pristine, and my FLAC files sound just as good as if I played from my CD player.

  • Morido

    > 24 hour

    Outstanding sound quality; 3D, clean and lifelike ! Used with a Pi 4.

  • S. L. Van Scoyoc

    > 24 hour

    ...with one of these and a Pi you have a first rate music transport. Im using Volumio with actually recognises that Im using two such devices in my household and I can use an old phone as my remote. The Allo is the key to an excellent player. When these became unavailable, possibly because of Covid, I used another high end brand with equally good results. Review elsewhere on Amazon.

  • Ken

    > 24 hour

    Very easy to install on an rpi 3b+, and I have it set up as a Roon endpoint. The sound quality easily blows away my Bluesound Node 2, which will now go on eBay. I highly recommend the DigiOne.

  • HumbleMan

    > 24 hour

    This item is pretty good for what it offers. You would need to buy a Raspberry Pi 3B+ (not 4B), a linear power supply for Raspberry, and a micro SD card in addition to this HAT board. The total cost of this project is around $260 with all items included. Now the sound: The DigiOne + LPSU is actually very good. It actually better than the Blue Sound node 2i which is offered for twice the price on Amazon. The DigiOne + LPSU is about 90% of the MicroRendu (not the Ultra version). Keep in mind that I also use a LPSU with the MicroRendu for the comparison. The wireless option can be used for the DigiOne, but it will significantly reduce the SQ. So, I suggest that you only use Ethernet connection. Using Bluetooth with the DigiOne also significantly reduce the SQ. Instead, you can use Apple AirPlay as a better alternative solution. The total time it takes for me to assemble the DigiOne is around 2 hours: 30 minutes to install the HAT and case. 1 hour for software installation (I use Moode in this case) 30 minutes for SqueezeLite and Airplay configuration. I almost cannot tell the difference between the DigiOne and the MicroRendu at the beginning ... and with careful back and forth comparison, I found that the MicroRendus sound is a little bit more relaxing and more revealing than the DigiOne. But, the difference is not much at all, and I have a very expensive and revealing audio system. My conclusion is: this product is pretty decent for its price.

  • Angel Rivera

    > 24 hour

    Its amazing how the sound can improve when you upgrade your RPI with an ALLO Hat. Noticeable improvement all around, but specially on his and mids. Thanks to the guys from IOT Electronics for a great service and attention to detail.

  • Nicholas G.

    > 24 hour

    Love the sound.

First... What is a “Transport”
Basically you have your music on the cloud or on your PC/NAS. If it’s on the cloud , you will use your smartphone to access your account and play. From your smartphone, in order to send the music to your DAC (DACs have USB and/or S/PDIF inputs) you need a transport that will be visible (to your smartphone / tablet /PC) as an Airplay device (iOS ) or UPNP/DLNA (Android/PC).
Our transports have different outputs. USBridge is feeding your DAC through USB and DigiOne is using coaxial/bnc. Depending on your DAC inputs you need to make a choice.
We started designing a digital (S/PDIF) transport for RPI with one goal in mind: Absolut best S/PDIF output.
Now let me explain… behind the grandiose wording there is an exact science. Since this is a digital stream the most important aspect for "absolut best" is jitter. Jitter in digital domain directly translates into analog errors. Second, is noise. Lowering the noise that’s injected in your DAC will produce some (small-to-none) improvements.
Then we went to work.
10 LDOs, 12 LPF, DC/DC convertors, galvanic isolator, WM8805, flip flops, buffers, NDK oscillators.
Optical had to go… by definition it has a jitter of 4ns. That’s 4000ps. We simply removed it. However, optical has galvanic isolation so we took the decision to use a digital isolator instead that separates the outputs from both RPI and WM8805.
DigiOne has 2 outputs: BNC and plain RCA (coaxial). On both, we have achieved jitter of 0.6ps (1 picosecond – time taken by light in a vacuum to travel approximately 0.30 mm).
Noise. 50uV (batteries have about 12uV of noise).
What we achieved, in our opinion and based on public measurements, is the best transport at any price point (yes, even when compared with 5k USD/EUR transports).
Enjoy.

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