DDC - Digital USB interfaces - Xmos or Amanero Combo384 based - Raspberry Pi - HifiBerry DAC+ Pro - reviews, comparison, modifications and USB-Audio in general
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Hello Riemann,

Thanks for all the info!

This one I saw before and is most interesting. Maybe you can investigate if there are more specs available from this manufacturer, like ESR values. Is there a website available for Qinfen?

https://world.taobao.com/item/53154...158&pvid=517e41c1-65db-41d0-b920-361264c7581b




This one is very good I think but very expensive, very big and very heavy, 4,2Kg !!

https://world.taobao.com/item/52863...24849311d2edeac9&spm=a312a.7700714.0.0.9AUrrV





These are very nice too,

https://world.taobao.com/item/548992047294.htm?spm=a312a.7700714.0.0.SYN1vm#detail









And these,

https://world.taobao.com/item/523052894620.htm?spm=a312a.7700714.0.0.SYN1vm#detail



https://world.taobao.com/item/523031555314.htm?spm=a312a.7700714.0.0.SYN1vm#detail



https://world.taobao.com/item/549133465896.htm?spm=a312a.7700714.0.0.SYN1vm#detail




Thanks for this link, they are very cheap!!!

https://world.taobao.com/item/536302242514.htm?spm=a312a.7700714.0.0.0XQuzI#detail




For Amanero, max is 5.5V, but do you also know minimum voltage?
This is most important because of lowest set voltage for ultracaps to reach longest runtime

Cheers!

Alex
 
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post-13473285
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Hello Riemann,

I forgot, you use this Amanero?




You told me before it can accept 3.3V to 5V (which is 5.5V max), so this means you can use ultracaps seting
with voltage drop from 5.4V (max of 2x2.7V ultracaps) to 3.3V.

Sad thing is, as the picture shows, it consumes 250mA which is a lot power.
Runtime of ultracaps will be very short. Probably you will have to go for the bigger and more powerfull ultracaps,
at least the 350F Maxwell / Lishen, or the monster ultracaps 3000F from Maxwell, but those are expensive.

Please take a look at these, can you ask supplier which version he sells since there is 3000F / 1200F and 700F in his advertisement.

https://world.taobao.com/item/44672748313.htm?spm=a312a.7700714.0.0.FMLmy6#detail



These would be best to use for your application, you need 4 pieces.


Cheers,
Alex
 
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Hello Riemann,

Yes it is, not sure if it is wise to buy from this seller....

In the meantime, I ordered 8x DA-M1 discrete R2R dacs from AGD, configured in push-pull configuration,
which means 4 da-m1's per channel.......

I will keep you posted on how this will sound in comparisson to AK4495......

Thanks for all your help!

Regards, and C H E E R S :)

Alex
 
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Il Cuffiotto

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The latest version 10.6.2 of Amanero driver for Win 10 is available:

https://amanero.com/drivers.htm
Anyone out there had to flash Audio gd version of Amanero with linux compatible firmware, like last 2006be10? Without that, mu R7HE can't play native dsd sent by Auralic Aries G1...Procedure may be different due to different board layout...
 
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arjuna93

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What is a few of the best usb dongles that connect my laptop to my dac that would result in a marginal sound quality increase?
 
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arjuna93

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What is a few of the best usb dongles that connect my laptop to my dac that would result in a marginal sound quality increase?
Aurorasound Bus-Power Pro 2 would not hurt. It leaves the data unchanged, but isolates it completely from computer power noise.
 
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sajunky

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Aurorasound Bus-Power Pro 2 would not hurt. It leaves the data unchanged, but isolates it completely from computer power noise.
I can't read Japaneese, but is seems to be external power injector, not a galvanic isolator.
When connected to the Amanero module in Audio GD DACs (which do not draw power from the bus) it will do nothing.
 
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arjuna93

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I can't read Japaneese, but is seems to be external power injector, not a galvanic isolator.
When connected to the Amanero module in Audio GD DACs (which do not draw power from the bus) it will do nothing.
Normally USB has noisy power running from computer to wherever you plug the cable in. If your DAC has perfect galvanic isolation, that isn’t an issue.
What BusPower-Pro does is it removes the link with computer power completely, substituting its own clean power instead. Data is passed through as is.

Whether this type of device makes an improvement to Audio GD I cannot say, no experience with Audio GD.
 
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sajunky

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Normally USB has noisy power running from computer to wherever you plug the cable in. If your DAC has perfect galvanic isolation, that isn’t an issue.
What BusPower-Pro does is it removes the link with computer power completely, substituting its own clean power instead. Data is passed through as is.
This device only cut PC 5V power wire and injects its own. It doesn't say anything about galvanic isolation, so the noise still comes through the USB ground wire. I hope I made it clear.
 
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