Hifimediy ES9023+TE7022 24/96 USB Dac - Page 13 - diyAudio
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Old 22nd December 2012, 05:39 PM   #121
alkasar is offline alkasar  France
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ah ok... I though (as you did azimut) Yubing meant isolate dac from pc.
Optical spdif isolates dac from amp, which is not bad


BTW, I heard that ES9023 behaves better when powered 3V6 instead of 3V3.
I could not find what is really better and how much better. Anyone knows ?
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Old 22nd December 2012, 05:56 PM   #122
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Default ...time...

Quote:
Originally Posted by azimut View Post
HifiMeDiy Sabre USB DAC. 96khz/24bit - ES9023+TE7022 + USB to optical converter

An usb isolator is still needed if I want insulation using 9023...
I think maybe HIFIMEDIY *is* taking my USB isolation hint? Incorporated into the existing artwork it would not cost as much as stand-alone isolators. And, who else has a DAC this economical that can DO that? Nobody that I know of! I would be tempted to add a 5V regulator [QUan says better than a 7805], a full-wave bridge and a standard coaxial power plug [the common size like a Linksys router takes], so that any AC or DC source above the bridge diodes loss and regulator minimum input would work. Like 2x 18650 batteries in series Click the image to open in full size. a 9V, 12V...AC or DC {or mis_wired by user}. A jumper or switch [or power plug could switch] for USB power. Maybe HIFIMEDIY will clarify what he's thinking of?
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Old 23rd December 2012, 11:03 AM   #123
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Default Thank you guys, here is the toy.

We call it UAE23+, which is usb isolated and need a external power supply. It will be bigger than UAE23. I think UAE23 is very convenient to use but UAE23+ will be little more high-end.
We still use ultra low noise regulater to make es9023 work the best.
Attached Images
File Type: jpg UAE23+1.JPG (29.0 KB, 699 views)
File Type: jpg UAE23+2.JPG (35.5 KB, 662 views)
File Type: jpg UAE23+.jpg (45.4 KB, 643 views)
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Old 23rd December 2012, 11:05 AM   #124
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we are still working on it so some details may be undetermined.
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Old 23rd December 2012, 11:13 AM   #125
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Quote:
Originally Posted by alkasar View Post
...
BTW, I heard that ES9023 behaves better when powered 3V6 instead of 3V3.
I could not find what is really better and how much better. Anyone knows ?
Hi, ES9023 will output more than 2Vrms when 3.6V supply, and only 1.9Vrms @3.3V. we suggest 3.6V for better voltage swing.
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Old 23rd December 2012, 11:14 AM   #126
alkasar is offline alkasar  France
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Hello Yubing
thanks for reply.

UAE23+ looks nice do I see correct that it will have both USB and spdif input ?

looking forward for more details and availibility on hifimediy.com
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Old 23rd December 2012, 11:23 AM   #127
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Hi, alkasar. Actually it has a coax output.
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Old 23rd December 2012, 11:24 AM   #128
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The dimension of chassis is 74*29*70mm only, so it's still a mini one.
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Old 23rd December 2012, 12:30 PM   #129
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Adding an spdif input would make it more flexible. I understand that the TE7022 chip can received spdif
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Old 23rd December 2012, 12:54 PM   #130
McDark is offline McDark  Russian Federation
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Yubing, I see UAE23+ got volume knob, how it is implemented? does it have output buffer opamp, which one if yes? Thanks.
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