Allo DigiOne Player Review Page 2

Allo DigiOne Player Sound Quality

I stuck with using the DigiOne Player as a Roon Bridge throughout my listening tests, primarily due to ease of use, guaranteed bit-perfect playback with DSP options disabled, and excitement out of using Roon for the first time. Were Roon not an option, I think I would stick with either moOde or Volumio. I used my Soundaware D100 for comparison listening, as specified above. For the rest of my audio chain, I largely stuck to my trusted Sennheiser HD650, though I would occasionally use the MrSpeakers Aeon Open and Ether C v1.1 to ascertain bass quality. For my amps, I used the Massdrop ZDT Jr. and Eddie Current Super 7 with the HD650, and the Schiit Magni 3 with the MrSpeakers headphones. For DACs, I utilized the Massdrop Airist R-2R and Schiit Modi Multibit. Regardless of how I configured my audio chain, I found consistent results between the DigiOne and D100.

It’s always a relief when you listen to a new component for the first time and hear strong qualities. Thankfully, the DigiOne Player sounded rather lively at first glance, which is usually a good sign. As I did comparisons between the DigiOne and my D100, I confirmed the DigiOne exhibited the same positive traits of a good, non-USB digital source. No greyness, softness, veil, or lack of dynamics. Awesome! My comparisons between the DigiOne and D100 taught me that the DigiOne isn’t exactly what I’d call a relaxed sort of digital source. No, I found it to be very clear, incisive, and even tangible. Couple that with its dynamic nature, and it made for a listen that grabbed me and didn’t want to let go (nor did I). The DigiOne Player could, at times, be the slightest bit rough around the edges, but nothing that sounded like “digititus” or fatiguing in any other way.

Where the D100 sounded a bit more nebulous or fuzzy, the DigiOne player cut into the music with sharp precision. The DigiOne Player is similarly dynamic, which is to say excellent with dynamics, but truly excelled in sheer clarity and palpability. The tone, harmonics, and overall timbre of voices and instruments were all well-defined and represented, leading to a rich and engaging, yet still highly technical, experience.

Of course, with these positive traits came some minor tradeoffs. The D100 was easier going without covering up details. It sounded a bit more relaxed, airy and spacious. I would also argue the D100 sounded a little more nuanced overall with micro-details and micro-dynamics, letting things ebb and flow as they wished when the DigiOne Player put everything on the table with ruthless efficiency and resolve.

When you wanted to pick an element out of the mix right then and there, without having to focus on it yourself, the DigiOne provided handily. With complex arrangements, the DigiOne had some obvious benefits keeping everything sharp and in order. But if you want a more relaxed experience akin to sitting further back in the rows, then the DigiOne may not be for you. I suppose you could say the D100 sounded more “analog” compared to the DigiOne’s more “digital” sounding nature, but I’m not sure that’s entirely correct. Both seem to bypass the downsides of USB audio and its inherent sonic nature, which is largely the digital audio transport standard these days. These are both clearly digital sources, no mistaking that, but the DigiOne Player, like the D100, captures more of what I’d expect (and prefer) from a great CD player or similarly high quality digital transport.

There’s little else I can say about the DigiOne Player’s sound quality. It is powerful, precise, resolving, rich, and engaging, an excellent source overall. I’d go so far as to say that despite its differences compared to the D100, it was at least as good sounding overall, and arguably a bit better if it suits your tastes. It performs well above its budget price point. Just be cautious if you prefer a more delicate sound.


The DigiOne Player stood out to me with its incisiveness, clarity, dynamics, and overall liveliness. For a purist attempting to avoid USB in their audio chain, it is well worth consideration. While I would argue it could stand to take on a slightly easier-going nature and polish some minor rough edges, I shouldn’t nitpick at this price point. Some may prefer a more “analog” sounding transport, and there’s nothing wrong with that.

Those with some technical know-how and the ability to experiment with cleaner power delivery will also find a lot to like with the Raspberry Pi platform’s options and flexibility. Again, be cautious jumping in if you’re completely allergic to a command line or want a softer sound.

As a personal aside, I find it humorous thinking I was so relieved three years ago to find a quality transport for roughly $1K, and I’m now contemplating replacing it with a device costing a fraction of that. That you can get this level of sound quality from a transport solution under $300 USD, or under $200 USD with the acrylic case, leaves me extremely satisfied and impressed.

For a bit of a side note follow up, and out of curiosity, I did try a linear power supply with the DigiOne Player after running my tests using its included wall wart (which I’ve heard is a good wall wart). The linear power supply did seem to make some subtle, but appreciable, differences in relaxing the sound and smoothing out some of the tiniest rough edges. It did all of this without changing the core nature of the DigiOne player. Even if one purchased the fully loaded DigiOne Player and added a linear power supply for $100 USD or less, I think the total cost is still exceedingly low for such a great sounding digital transport. In fact, the DigiOne Player with the basic LPSU is almost guaranteed to become my new staple source.

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firedog55's picture

So this is a little mini PC optimized for audio? It connects via ethernet to a network and then over spdif to your DAC?
I understand for it comes fully assembled and ready to go with Roon, but with some other playback SW you have to do HW and SW setup?


Tyler Schrank's picture

Yes, the Raspberry Pi is essentially a mini PC that runs Linux, but it is not inherently optimized for audio. What it offers is a healthy selection of input/output pins on the board, to which you can attach other boards on top of that for other purposes. These are called HATs (Hardward Attached on Top).

The DigiOne in and of itself is technically an advanced HAT that serves as a sound card of sorts that does nothing but output an SPDIF signal (a good, clean, re-clocked signal at that). You can buy it separately if you already have a Raspberry Pi.

The DigiOne Player is a pre-assembled, ready-to-go collection of all the parts you'd need: Raspberry Pi, DigiOne HAT, case, and PSU. You can pick which OS you'd like installed on it as well, which they handle for you before shipping.

So, yes, it connects via ethernet, and almost all of the audiophile-customized OSes you can install on it offer web GUIs to which you connect. The Raspberry Pi uses a MicroSD card for its main storage, so with the right USB adapter, you can plug it into any PC to write OSes and files to it directly.

OSes like Volumio and moOde are able to play local, ie. USB storage attached to Raspberry Pi, or network music files. You control the setup and playback through their web GUI.

OSes like DietPi are a little more complicated, with the web GUI mostly being just a settings page. But the main upside to DietPi, at least if you have it installed on the DigiOne Player from Allo, is that it comes with the Roon Bridge software pre-installed. That's important to note, because I don't believe the other OS options you can get pre-installed have the Roon Bridge ready to go out of the box.

So, while DietPi is more complicated to use, if all you want is a Roon Bridge, you essentially plug everything into the device, power it up, and wait for it to boot so Roon can find it.

But if you know how to enable SSH on the other OSes, you can connect and install the Roon Bridge software to any of these OSes manually. Works the same way.

You won't need to bother with hardware setup, but there is a strong probability you will one day end up in a Linux command prompt to customize or install certain things to your taste.

Thankfully, there are tons of great guides online that make it about as straightforward and easy as you could hope for this sort of device.

That is the one caveat to the DigiOne, is that while it's really inexpensive, you'll probably end up in a command prompt eventually for one reason or another.

I hope that helps!

pete111's picture

Hi have to say I don't get everything as well. Those are lenghty answers, but still maybe I read too fast and missing things. So, To understand, the storage is the SD card, Right? no input, the Ethernet is just for the GUI, right? Do you plug a mouse, a keybord and a screen to this directly? You simply plug the Ethernet to a router? No need for an other computer? To be clear, the only thing on board is the storage and OS, and the command, play pause view your playlist are somewhere at an IP adress on the web? There are no digital audio input (just a player not a streamer, no music goes trough the Ethernet ?)

Tyler Schrank's picture

The SD card is essentially the Raspberry Pi's hard drive. That's where the OS is stored. However, you can get as large of a card as you want and store anything you'd like on it as well, just like a normal hard drive in any computer. (Note that I'll refer to Raspberry Pi and DigiOne player interchangeably here.)

Ethernet and WiFi are used for network connectivity, just like any other computer. But since most of these audio-based OSes run an internal web server to host a GUI you can access locally via a web browser on another computer, you would definitely need the Raspberry Pi connected to your home network. Note that if you want to use WiFi to connect the device, you first have to connect it via Ethernet to configure it as such.

Keyboard, mouse, and monitor can be used if you like, but since Raspberry Pi runs your choice of Linux OS, it's easier to enable SSH and then use a program like Putty on another computer to "console in" remotely. Most audio-customized OSes for the device are going to be command line only, so that's all you'd get with a KB/M and monitor hookup to the Raspberry Pi anyway.

However, the DigiOne Player is configured by Allo to try to make it plug-and-play when you receive it.

For example, if you use Roon, you'd buy a DigiOne Player with the DietPi OS. When it arrives, the steps would be:

1. Plug in the device to ethernet
2. Plug in power
3. Wait about 5-10 minutes at most
4. DigiOne should show up as a player option in Roon
If it does not, unplug and plug back in to try again. Since there's no power button on the device, you have to rely on plugging and unplugging it.

If you instead want to use Volumio, for example, and order it configured for that (if you don't have Roon), do the following. Volumio has a GUI you access through a web browser on a different computer:

1. Plug in device to ethernet
2. Plug in power
3. Wait about 5-10 minutes at most
4. In a web browser on another computer on your network, go to the URL http://volumio.local/
(If this does not work, you will need to find the device's IP address and enter that for the URL - IP address should always work)
5. Volumio web GUI will walk you through setup from there. You can play music with a USB device attached to the DigiOne Player or via network storage, which the setup will walk you through.

So, yes, it's just a digial audio streamer that runs on a Raspberry Pi with a custom SPDIF output board on top.

I know the device might not be for everyone. And that's OK! It sounds really great and is relatively inexpensive, but its drawback is relative ease of use.

If you instead want a good sounding SPDIF device that's dead simple, I might recommend the Schiit Eitr. Plugs in via USB to any PC, outputs SPDIF, and sounds really nice. No need to fuss with it beyond that in any way. I probably won't write a review for it, but having recently heard it for myself, I can only say good things about it so far.

zombeewoof's picture

do you have any recommendations for these?

Tyler Schrank's picture

I used a pretty generic LSPU off eBay that shipped internationally. I already had it on hand for a different project, so it seemed like low hanging fruit to give it a shot on the DigiOne Player. It ultimately boiled down to me finding an LPSU capable of 5V/3A at the best price I could find.

If you search something like "Raspberry Pi Linear Power Supply" on eBay, you'll find plenty of reasonable options at a low price. Just make sure it puts out at least 2.5A, if not 3A.

I've read some threads in various forums about people building their own LSPUs for the RPi, and I'd bet you can get even better results that way!

ednaz's picture

You're clearly more up to date on the Pi options and behaviors... I've got a Logitech Touch that's begun periodic malfunctioning, and am thinking about this as a replacement. The Touch has the hacked software that lets it pass 24/96, which it does via coax to a Peachtree Audio amp/dac combo. I'm NOT using wifi directly, but am feeding it from an ethernet cable that runs from one node on my mesh network. Had to do that because the Touch only does the 2.4ghz modes, not enough bandwidth for 24/96 by wifi.

I'd really love to ditch the ethernet cable (it's a baseboard run of probably 30 feet...) I know I can get 5ghz wifi that plugs into an ethernet port. Will this put sufficient additional load on on the Pi to cause problems?

Tyler Schrank's picture

As best as I know, the RPi 3B+ has an onboard WiFi adapter that supports 5GHz modes. I think earlier models only supported 2.4GHz, and for those, you would need to use a compatible USB adapter.

I wouldn't worry about either method causing problems for the Pi, but maybe best to go for the latest model to ease any concerns!

wemist's picture

I'm no know-it-all, but I find the notion that data sent over a USB connection could have a defined aural signature ("softness, greyness, lack of dynamics") to be one the most absurd things I've read on this site. Even assuming your description of the final audio playback is correct (which I'm doubtful of, as well), the USB technology doesn't even begin to have qualitative impact on music dynamics or the tonal register of whatever is being played. Now maybe there is a problem with your DAC hardware, but that has nothing to do with USB itself, and wouldn't give you any reason for being phobic about USB in your audio chain. You might as well claim that Ethernet adds treble- it's ridiculous.

My own view is that if you are going to claim something so broad and sweeping, you should feel some obligation to back it up with real technical information. Absent that, the labels for this kind of bias in decision-making only deserves the strongest, most unsparing labels and makes me wonder about the direction of this site and its editorial controls.

Sedusia Sound's picture

And all amps sound the same; and all cables sound the same; and all digital players sound the same (after all, bits are bits; it's just 0's and 1's); and all tubes sound the same; and all speakers sound the same (yes, THIS was the conclusion by one so-called "reputable" audio reviewer after conducting a speaker shoot-out some years ago)

pwjazz's picture

I think OP's point is that a properly implemented USB interface is not going to audibly impact sound quality. Poor USB connections can suffer from jitter, but it has to be pretty darn severe to become audible. Here's a great article on the subject.

BTW, especially at higher resolutions, modern asynchronous USB tends to be less affected by jitter than TOSLINK connections, so if I had to choose between chaining an optical output to a DAC vs just hooking up a DAC to a Raspberry Pi via USB, all else being equal I'd bet on USB being the better option.

Also, comparing amps (or even cables) to USB interfaces is a false equivalence. USB operates in the digital domain, with error correction no less, and bits are in fact bits. Amplifiers operate in the analog domain, which is a completely different beast and leaves room for noise, distortion, non-linearities and so on.

wemist's picture

Sedusia , that doesn't help here. Just because some whack on the other side of the argument makes ridiculous claims doesn't make a claim opposite in spirit more reasonable. I think we can agree that every component element doesn't sound the same. What some people should realize is that and every component element doesn't necessarily produce sound difference. I'm not sure if you recognize the limits of what I'm claiming: there may be an objective way that USB was involved in a setup that was affecting audio quality. But it has nothing to do with USB itself, rather in what packed or unpacked the data that was transferred over it. But if you test a variety of different rigs and isolate the problem in each of them to the presence of USB, the data corruption is in your cranium.

SoapBox Sound's picture

Your second statement - "My own view is that if you are going to claim something so broad and sweeping, you should feel some obligation to back it up with real technical information" - would also apply to your very own opening statement.

wemist's picture

Someone has offered that my own claims about the nature of USB deserve to be validated by the same demand I put forward- no broad claims without a technical explanation. I don't consider my claims broad or especially imaginative, nor do I write on these topics, but I'll take a swing at it nonetheless:

USB is "an industry standard that establishes specifications for cables, connectors and protocols for connection, communication and power supply between personal computers and their peripheral devices". (Wikipedia). Note that the standards here are about connecting devices and no mention is made about the data that gets shared using the USB protocol. That's because USB standard has one purpose: to connect and to get out of the way. This isn't the pipes in Flint that shed lead into the water: USB can't impact data integrity or it wouldn't be usable. That makes it just another type of connection in the history of connections (serial bus, SCSI, FIrewire/IEEE 1394, whatever) that simply permit the transport of digital data.

I assume you understand that digital data is numbers and those numbers, however packaged between discreet items of computer hardware, can't be influenced in the trip from one to the other. Data corruption doesn't turn audio into "undynamic" music; it corrupts files and makes them unplayable.

The qualities of audio that get transferred between devices have everything to do with audio source, the hardware/software features, and any A->D or D->A conversions, the setting on the device that sends and the device that receives. None of those have anything to do with USB. It's quite possible hardware makers who use USB have done a rotten job handling the music data, but ascribing that to USB and avoiding USB for that reason is misguided.

I encourage anyone who wants to bat down any of my assertions here to go for it- I enjoy learning. But I challenge anyone to assert that any port standard has any relevance in judging audio quality, except in the sense that it might not be able to send the required quantity of data if you used USB 1.0. USB 2 is more than enough for high-res audio, and that's been around for 18 years.

Solarophile's picture

I believe you're right.

USB data transfer provides better bandwidth and the bidirectional nature allows asynchronous operation over TosLinke or coax. There is plenty of objective information out there (just look at the objective audiophile blogs) that shows the superiority of USB when it comes to jitter suppression and lower overall distortion. Not to mention the ability for USB to transfer DSD64+ easily to compatible DACs.

It's obvious that there is no ability for bit-perfect data transfer to impart any "greyness" or whatever unless the DAC is somehow suboptimal when operating with USB input. In that event, it's best to get a better DAC!

pete111's picture

I'd like to add to that, when you say:" I assume you understand that digital data is numbers and those numbers..." No they are not. They are a succession of Hi voltage levels and low voltage level represented for mathematical purposes by 0 and 1. A lot of things can go wrong, interferences do what they do, they interfere. On the receiving end, the DAC have to measure these voltages. It's a misconception that since it's digital the hardware don't matter, a poorly designed USB port can certainly have a dirty signal and this is for sure audible. What if the amplitude of that wave is not stable, you will have many errors... good dacs have error correction, but not all USB is created equal, altough they use the same protocol. I do agree to a certain point that putting a generalized sonic signature to everything USB is a bit strong, but I want to point out that in the end it's not that different from an analog signal. Since errors are random a lot of error means more noise (by definition, noise is random) Again I don't know if the distortion is audible but it is at least plausible that the nature of the distortion in less than perfect USB design is of a type that create some sonic caracteristics, in any case it is not necessarely even harmonic distortion and even at low level they can to a trained ear sound fatiguing, hard, etc. But, I believe this is possible to have very good sounding USB, I wouldn't buy into generalizing or even comparing, spdif is also prone to these problems, I would need scientific evidence to pick a side here, but I wanted to give my small input on a quite generalized misconception, not against you personally, but digital don't mean perfect, far from it and a lot have to do with implementation and design, not just the protocol.

pete111's picture

I'm not going to debate on what's best between spdif and USB, or if there is an audible benefit to one or the other, but such a claim that " Data corruption corrupt files and makes them unplayable" Shows a lack of understanding of digital audio, no offense, but it lower the credibility of your claim. Just like in the analog domain, noise is a real and measurable concept, Jitter is a real and measurable concept as well. Saying that the USB protocol has no concept of data by citing a wikipedia page is plain wrong as well. A more interesting debate would be is there a real benefit in preserving data integrity at all cost vs relying to heavy data correction algorythm, or how audible are jitter problems really are, I don't have an answer for that, but what is not debatable, is that data transmission errors and jitter problem do translate as measurable distortion, and measurable noise levels.

Tyler Schrank's picture

I definitely get that point of view and can relate as someone that used to be in the same thought camp. I felt similar when some friends of mine started making claims about how high quality, old school CD players made a noticeable difference in SQ over even the best, most modern USB implementations at that time (whether external devices, like USB->SPDIF converters or built-in implementations). I mean, how could there be a difference if all known measurements ended up looking similar for any good implementation, or at least below what we'd assume to be hearing threshold?

But, you know, I didn't think it fair to say anything without testing on my own. These guys had years more experience than me, and I stuck with them because they were bullshitters and saved me tons of money by usually being very conservative in their audio approach. And so I got a few different products, did some A/B testing, and, sure enough, heard these differences for myself. Yes, I'm generalizing, but I quickly fell out of favor with pretty much all USB implementations after finding good, pure SPDIF sources to usually sound more engaging and captivating.

Is it possible we're crazy and imagining things? Could be! I'd love to get together with folks like you and really crush out some good blind tests, but I can only manage with what limited methods I have at home for now.

I think it's all a lot of guess work at this point as to how best to handle every aspect of digital audio. Lots of theories and guesses floating around, and I agree not enough empirical evidence, but still fun to try and carve out what we can, little by little, through objective and subjective testing. I think there's a place for both, if both kept in check.

LarryMagooi's picture

Want a great LPS that is not expensive and has adjustable outputs? It's rock steady with zero noise DC!

jherbert's picture

All current PIs have wifi on board. Problem is that an aluminum case effectivly shield the onboard antenna from doing something useful. So you might be better off using the acrylic case which is much cheaper and gives you wireless bliss.

davide256's picture

I own the USBridge, Digione and have owned a microRendu. The Digione is relatively free of digital artifacts but nowhere near as resolving of low level signal information as the USB devices.. that information often disappears in Digione playback. Here is hoping the new Signature version of the Digione is a "Remedy" to the original Digiones's resolution deficits... I'd kick USB to the curb for a source that resolved without digital irritants

Tyler Schrank's picture

So, you'd say if I tested out the USBridge, that would be an adequate device for what you mentioned? Any particular tracks and samples you'd recommend so I can listen for the exact same thing you are? I want to make sure I'm listening for and hearing (or not) the same low level information you mention.

I know these are relatively new products compared to some USB stuff I've tested, so I'm always open minded to give that realm another shot!

davide256's picture

What I experienced with the USBridge is that I had to spend about $325 on upgraded power supply (LPS 1.2)and $325 on a reclocker (ISO Regen) before it surpassed the Digione (using same power supply. Without a reclocker the digital irritants made USBridge unpleasant compared to Digione. I find Reference Recordings/ Night at the Opera, Track 2 Salome's Dance to be a nuanced recording, low volume percussion and bass details that are muddy/lost with Digione vs clear with USBridge. Other Reference Recordings (Bolero, Mephisto & Co,Belkis &Queen of Sheba) should be as revealing.
If you just want to dabble the Sonore microRendu remains the cheapest bulletproof streamer Ive owned, no irritants, excellent resolution even with a basic power supply.

taipan254's picture

Instead of connecting this via wi-fi or a router via LAN, connect this directly to your music server via a "bridged" LAN connection (a la fame). You'll be happy you did. Big improvement at a small cost.

Brown Sound's picture

Loved the write-up but this should have been over on AudioStream, IMHO. Anyhoo, it got me interested in Allo for their USBridge transport to replace my WIN10 mini-PC that is currently in my rack. Thank you, Tyler.

Tyler Schrank's picture

I'm going to write more headphone-specific articles in the near future! :)

I know there are a lot of headphone-focused individuals that don't branch out to other sites, and they're just as interested in their source devices as anyone else.

Glad you found it helpful nonetheless!