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Measurements of Soncoz LA-QXD1 Pre-production "Evolution of KTE Board"

Habu

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Habu

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hyperknot

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Yes, wanted to ask the same! If the volume control, bluetooth, firmware upgrade, etc. is not important, are they similar?

Also, if I'd like to run 15 meters of XLR cable from them, is there any difference between them? Lower impedance, different opamps, etc?
 

hyperknot

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I honestly don't understand this whole USB-C addiction for USB 2.0 speeds. What does it give you at all?

On the other hand, it seriously limits cable lengths and also makes cables much more expensive. Most USB-C cables are no longer 1 meter. Cheap USB-B "printer" cables on the other hand can be bought in 15 or 25 meter length, possibly in active extended versions.

Since USB-B cables only need to work with USB 2.0 specs they offer much more flexibility for audio applications. I am personally very happy that the QXD1 has USB-B connector!
 

Ben1987

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In sound quality there much diference with the big brother SGD1?
Thanks
It will be different. Different power supply and DAC architectures and different capacitance choices will bring different sound quality!But the difference is not particularly large.
 
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I honestly don't understand this whole USB-C addiction for USB 2.0 speeds. What does it give you at all?

On the other hand, it seriously limits cable lengths and also makes cables much more expensive. Most USB-C cables are no longer 1 meter. Cheap USB-B "printer" cables on the other hand can be bought in 15 or 25 meter length, possibly in active extended versions.

Since USB-B cables only need to work with USB 2.0 specs they offer much more flexibility for audio applications. I am personally very happy that the QXD1 has USB-B connector!
Many things:
- first of all compatibility: MacBookPro / Recent Laptop -> usb-c, Android phone -> usb-c
- small, neat factor
- reversible! side doesn't matter You can plug in your device easier with closed eyes and don't worry
- can provide up to 100 watts of power (enough to power a laptop!)
- it's fast (up to 10 gigabits per second)
- compatibility with other devices older to Type-C ports, even devices that use non-USB technologies, like DisplayPort, VGA and Ethernet

This USB-b is really archaic.
 

hyperknot

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Many things:
- first of all compatibility: MacBookPro / Recent Laptop -> usb-c, Android phone -> usb-c
- small, neat factor
- reversible! side doesn't matter You can plug in your device easier with closed eyes and don't worry
- can provide up to 100 watts of power (enough to power a laptop!)
- it's fast (up to 10 gigabits per second)
- compatibility with other devices older to Type-C ports, even devices that use non-USB technologies, like DisplayPort, VGA and Ethernet

This USB-b is really archaic.
Do you realize none of these apply to a USB 2.0 DAC (except for being reversible)?
 
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Do you realize none of these apply to a USB 2.0 DAC (except for being reversible)?
Do you realize that we do not need 20 USB-X and worry about types if we have one good?

Apart from being reversible also point 1) and 2) applies
 
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Do you realize that we do not need 20 USB-X and worry about types if we have one good?
If you are changing/upgrading your desktop DAC, there is a good chance that the previous one has the same USB-B input socket, so if you bought a better USB-B cable for your previous DAC, it's a direct "plug-and-play" at zero cost, isn't it ?

Maybe I'm wrong but the USB-B is mostly used for "data only" while other USB types are used for Data and/or Power. When there are a USB Data socket and a USB power socket on a same device, the Data one has a different shape to differentiate it from the one dedicate to Power, to avoid confusion, It isn't for annoying you or give the device a more archaic look.
 
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maxxevv

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I honestly don't understand this whole USB-C addiction for USB 2.0 speeds. What does it give you at all?

On the other hand, it seriously limits cable lengths and also makes cables much more expensive. Most USB-C cables are no longer 1 meter. Cheap USB-B "printer" cables on the other hand can be bought in 15 or 25 meter length, possibly in active extended versions.

Since USB-B cables only need to work with USB 2.0 specs they offer much more flexibility for audio applications. I am personally very happy that the QXD1 has USB-B connector!
You can find 5 meter USB-C data cables but not longer, but they do cost about 15~20% more than equivalent quality USB-B printer cables. .
USB-B printer cables do go as long as 10 meters though I have not found longer.

So horses for courses I guess. If there is a need for more than 5 meters, guess people are out of luck when it comes to USB-C.
 

gvl

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149.3mm, that's a very specific number which unfortunately doesn't stack up nicely with JDS Atom :(
 

hyperknot

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You can find 5 meter USB-C data cables but not longer, but they do cost about 15~20% more than equivalent quality USB-B printer cables. .
USB-B printer cables do go as long as 10 meters though I have not found longer.

So horses for courses I guess. If there is a need for more than 5 meters, guess people are out of luck when it comes to USB-C.
The longest USB-C to USB-C I found on Amazon was 3.0 meters, the 5 meter ones were having USB-A on one side, and I guess for those who still have USB-A they'd prefer the cheap and reliably USB-B "printer cables".
 
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