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Double review: Raspberry Pi based Allo DigiOne Transport and Allo Boss DAC
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<blockquote data-quote="Wietsche" data-source="post: 830224" data-attributes="member: 18941"><p>Hi KKAN,</p><p></p><p>Using the uDSD on the Raspberry Pi USB ports will probably end up with you experiencing the USB bus limitations I mentioned. Snap, crackle and pop sounds, some lost beats, and maybe timing issues. This will only become apparent while playing very high sample rates files. </p><p></p><p>The other problem has to do with powering the uDSD from the Pi USB port. This could introduce noise and I am not sure how much power can be drawn from the port safely. This can be remedied by providing external power to the USB port of the uDSD using a power/data splitter or a powered USB hub. And using a good linear power supply or an extremely clean and well designed switch mode power supply. The official Pi PSU is usually the first thing the guys replace when using the Pi for audio applications.</p><p></p><p>The Boss on the other hand will work much better on the Pi as the above problems have been well addressed. If you want to use a USB DAC, rather get an Odroid or NUC if you dont have a Pi already. I will try out the Allo USBridge in the future, but until I have used it myself I can't recommend it.</p><p></p><p>The sound quality... mmm... can't recall that I compared the uDSD and Boss directly, but I preferred the Schiit Modi Multibit sound over the uDSD way back, and that means I would probably rate the Boss above the uDSD as well. The Boss has the warmest sound of them all without losing the detail. And I like that. </p><p></p><p>The uDSD RCA outputs sounds much better than the headphone output and it works very well and sounds very good feeding an external amp. Obviously you can't use the Boss on a PC directly, and you can't send digital out to another DAC like with the uDSD.</p><p></p><p>Also need to keep in mind that I am still using all 3 DACs in different setups, and none of them are bad, in fact they work excellent where I use them. I think the biggest difference is where they fit into your setup, and what you need them to do. They have different inputs/output options. Still I think the Raspberry Pi with Boss DAC is the most compact and comprehensive solution for sending quality and great sounding music to your amplifier, especially in its price class. Will be difficult to beat.</p><p></p><p>Hope this helps.</p><p></p><p>Cheers,</p><p>W</p></blockquote><p></p>
[QUOTE="Wietsche, post: 830224, member: 18941"] Hi KKAN, Using the uDSD on the Raspberry Pi USB ports will probably end up with you experiencing the USB bus limitations I mentioned. Snap, crackle and pop sounds, some lost beats, and maybe timing issues. This will only become apparent while playing very high sample rates files. The other problem has to do with powering the uDSD from the Pi USB port. This could introduce noise and I am not sure how much power can be drawn from the port safely. This can be remedied by providing external power to the USB port of the uDSD using a power/data splitter or a powered USB hub. And using a good linear power supply or an extremely clean and well designed switch mode power supply. The official Pi PSU is usually the first thing the guys replace when using the Pi for audio applications. The Boss on the other hand will work much better on the Pi as the above problems have been well addressed. If you want to use a USB DAC, rather get an Odroid or NUC if you dont have a Pi already. I will try out the Allo USBridge in the future, but until I have used it myself I can't recommend it. The sound quality... mmm... can't recall that I compared the uDSD and Boss directly, but I preferred the Schiit Modi Multibit sound over the uDSD way back, and that means I would probably rate the Boss above the uDSD as well. The Boss has the warmest sound of them all without losing the detail. And I like that. The uDSD RCA outputs sounds much better than the headphone output and it works very well and sounds very good feeding an external amp. Obviously you can't use the Boss on a PC directly, and you can't send digital out to another DAC like with the uDSD. Also need to keep in mind that I am still using all 3 DACs in different setups, and none of them are bad, in fact they work excellent where I use them. I think the biggest difference is where they fit into your setup, and what you need them to do. They have different inputs/output options. Still I think the Raspberry Pi with Boss DAC is the most compact and comprehensive solution for sending quality and great sounding music to your amplifier, especially in its price class. Will be difficult to beat. Hope this helps. Cheers, W [/QUOTE]
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Double review: Raspberry Pi based Allo DigiOne Transport and Allo Boss DAC
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