Audio-gd Digital Interface
Jul 15, 2013 at 3:09 AM Post #3,901 of 4,156
Quote:
From Audio-Gd site:  
"We only have sale the DI-PSU , we have not stock and sale the Lithium-ion battery or universal DC power supply" :frowning2:

 
I may have had a hand in that. Li-ion batteries are restricted to import to Australia and AGD tried for a months to send mine before we worked out why they kept being rejected and returned.
I didnt notice a difference between a battery and the PSU but the upgrade from USB power was a magical moment.
 
Jul 15, 2013 at 11:01 PM Post #3,903 of 4,156
On an free/inexpensive side note for those of you that have a battery pack or the psu, try taping the outermost pins of your usb cable part that plugs into your computer (pins 1 and 4, the ground and +5V pins). You'd need something like an exacto knife as well as electrical tape for this. The reason being is that even though the DI-V3 doesn't draw power from usb when using the psu/battery, computer noise can still be sent along the cable. This idea came from head-fi user "somestranger26" in the reference 10 thread, so props go to him. (I've googled around and not everyone has reported a difference a crossed a wide range of usb enabled dacs. Some of those dacs required the ground be left un-taped to be recognized by windows/osx/linux, but that doesn't seem to be an issue with audio-gd usb32 systems. Just thought i'd spread the word.)
 
Jul 16, 2013 at 3:54 AM Post #3,904 of 4,156
as far as i know in usb-32 case those pins aren't even connected while it's not being fed from PC.
so, while in 99% of other usb-receivers this would give a result, in usb-32 case those actions are pretty useless
 
Jul 16, 2013 at 2:04 PM Post #3,905 of 4,156
Quote:
as far as i know in usb-32 case those pins aren't even connected while it's not being fed from PC.
so, while in 99% of other usb-receivers this would give a result, in usb-32 case those actions are pretty useless

 
The pins are still physically connected and could possibly send computer noise. Switching the DI-V3 from usb mode to psu mode doesn't magically disconnect the ground and +5V, it just doesn't use them to draw power for operation anymore. Just because the DI-V3 isn't drawing anything intentionally doesn't mean the computer itself isn't sending anything by accident.
 
Jul 17, 2013 at 6:24 PM Post #3,906 of 4,156
Quote:
The pins are still physically connected and could possibly send computer noise. Switching the DI-V3 from usb mode to psu mode doesn't magically disconnect the ground and +5V

 
It's a switch, nothing magical about it, when switched to DC IN, the contacts connect the power supply to DC IN and disconnect USB.  You know... like a switch.
 
Jul 17, 2013 at 6:50 PM Post #3,907 of 4,156
I have a DI V1 w/PSU but never use it because the built in USB on my NFB-8 sounds better even though it isn't async.

Just got a DI V3 a few days ago which I use with bnc to NFB-8 and it is a big step up in sound in every way.
 
Jul 17, 2013 at 6:59 PM Post #3,908 of 4,156
I'd love to see John Darko's write up on the USB32 V3.  I believe he has his eye on revisiting the DI.  Love to hear where it stands beside the AP2 and Concero at 1/3 the price :D
 
Jul 19, 2013 at 7:23 AM Post #3,909 of 4,156
hi guys,
can someone explain to me what does this do?
 
I'm currently on essence stx, but making a jump to the NFB 3.33 soon, just doing abit more research to see what else i need before i make the plunge to save on shipping.
 
My set up is Computer, Speakers ( Adam A3X, Active Speakers). And when im using the NFB 3.33, it should be Comp > nfb 3.33 > speakers.
 
how will this DI thing help? or its of no use to me
 
Jul 19, 2013 at 7:35 AM Post #3,910 of 4,156
Quote:
Originally Posted by bruiselee /img/forum/go_quote.gif
 
hi guys,
can someone explain to me what does this do?
 
I'm currently on essence stx, but making a jump to the NFB 3.33 soon, just doing abit more research to see what else i need before i make the plunge to save on shipping.
 
My set up is Computer, Speakers ( Adam A3X, Active Speakers). And when im using the NFB 3.33, it should be Comp > nfb 3.33 > speakers.
 
how will this DI thing help? or its of no use to me

 
The NFB-3.33 has USB-32 input (same as the DI) so I don't see any benefit getting the DI in your case.  You will be fine with PC > NFB-3.33 > speakers.
 
The main purpose of a DI is to convert PC's USB to SPDIF coaxial output, then send that digital signal to a DAC with coaxial input.  Good for situations like, if you want to use USB but your DAC doesn't have USB and only has coax input.
 
Jul 19, 2013 at 7:48 AM Post #3,912 of 4,156
Well A3X are active speakers, so they have volume control..
 
Jul 19, 2013 at 8:33 AM Post #3,913 of 4,156
Quote:
Well A3X are active speakers, so they have volume control..

 
All active monitors don't necessarily have (e.g. the Focal solo6 don't), hence my question 
wink.gif

 
Jul 19, 2013 at 8:54 AM Post #3,915 of 4,156
Quote:
Originally Posted by Clemmaster /img/forum/go_quote.gif
 
All active monitors don't necessarily have (e.g. the Focal solo6 don't), hence my question 
wink.gif

 
I wasn't aware of active speakers without volume control, but it was easy enough to google and find that the A3X have volume control anyway...
redface.gif

 

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