Ultra Analog D20400 datasheet?

Petter · 28th June 2005, 04:52 PM

I am looking for an Ultra Analog D20400 datasheet.

I am also looking to purchase the parts.

kevinkr · 28th June 2005, 05:52 PM

I am not sure whether or not this part is even available these days, its quite an old design as well. (10+ yrs old) I have an old Ultralink II that uses D20400-A and it does sound very good. I have not been able to get the data sheets. UltraAnalog was acquired a while ago by Wadia, they may or may not be able to help.

Kevin

georgehifi · 28th June 2005, 08:47 PM

I cannot remember where I got it from but this could help.

Cheers George

PeterSt · 20th November 2005, 09:27 AM

I have unused UltraAnalog devices for sale as well as complete technical descriptions and diagrams.

The stuff for sale is:
1 pcs UltraAnalog AES20 AES/EBU
ultra-low jitter Input Receiver

1 pcs UltraAnalog AES21 AES/EBU
ultra-low jitter Input Receiver (trafo-koblet indgang)

2 pcs UltraAnalog D20400A (Dual channel reference DAC)

Additionally I have digital filters including HDCD decoder
2 pcs Pacific Microsonics PMD100

Please contact me on audiofreak@jubii.dk and let me know which devices you are looking for.

BR Peter

KAISER_nsk · 14th July 2008, 09:20 PM

I am also looking to purchase UltraAnalog D20400A

vasiltech · 15th July 2008, 12:08 AM

Ultra Analog D20400 datasheet :
http://www.vasiltech.nm.ru/files/D20400.pdf

Dmitry Korneev · 23rd December 2008, 11:31 AM

I am also looking to purchase UltraAnalog D20400A

JC951t · 23rd December 2008, 03:02 PM

Hmmm,
Nice that others are sharing the same santiments as me.
I have a spare SFD2 dac board with a dead input receiver.
Strangely so, I've seen quite a few dead receiver & have been informed that it's not so reliable. My board has a NPC instead
of the PDM100 decoder. Looking at the specs, it seems that
the PDM 100 is pin compatable to the NPC chip.
Can anyone confirm if it is a drop in replacement ?
If it is a drop in replacement, I will try I2S connection to my
CD pro using a Hexinvertor as suggested by Guido Tent.

Thanks in advance

lowry · 28th December 2008, 04:00 PM

Hello !

Last year I bought a used Parasond DAC 2000.
The input receiver AES 21 is defektive and I´m trying to repair this receiver. It took me a long time to shorn of its epoxy resin casing.
So far I found a lot of bad solder connections, but this seems not to be the main problem.
Does anyone have a schematic of this device or have anyone repaired this receiver ?

Thanks !

Stefan Winter

wolfiregi · 14th January 2009, 12:59 PM

Hello. Buy a used Sonic Frontiers Jitterbug via ebay. They are cheap and use Input Receiver AES21.De-solder the chip an repair your DAC. Good luck. Wolfgang Graf

28th June 2005, 04:52 PM	#1
Petter diyAudio Member Join Date: Jan 2001 Location: Scandinavia	Ultra Analog D20400 datasheet? I am looking for an Ultra Analog D20400 datasheet. I am also looking to purchase the parts.

28th December 2008, 04:00 PM	#9
lowry diyAudio Member Join Date: Aug 2008	Parasound AES21 Hello ! Last year I bought a used Parasond DAC 2000. The input receiver AES 21 is defektive and I´m trying to repair this receiver. It took me a long time to shorn of its epoxy resin casing. So far I found a lot of bad solder connections, but this seems not to be the main problem. Does anyone have a schematic of this device or have anyone repaired this receiver ? Thanks ! Stefan Winter

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28th June 2005, 05:52 PM	#2
kevinkr diyAudio Moderator Join Date: Sep 2004 Location: Boston, Massachusetts Blog Entries: 6	I am not sure whether or not this part is even available these days, its quite an old design as well. (10+ yrs old) I have an old Ultralink II that uses D20400-A and it does sound very good. I have not been able to get the data sheets. UltraAnalog was acquired a while ago by Wadia, they may or may not be able to help. Kevin

20th November 2005, 09:27 AM	#4
PeterSt diyAudio Member Join Date: Nov 2005 Location: Copenhagen	I have unused UltraAnalog devices for sale as well as complete technical descriptions and diagrams. The stuff for sale is: 1 pcs UltraAnalog AES20 AES/EBU ultra-low jitter Input Receiver 1 pcs UltraAnalog AES21 AES/EBU ultra-low jitter Input Receiver (trafo-koblet indgang) 2 pcs UltraAnalog D20400A (Dual channel reference DAC) Additionally I have digital filters including HDCD decoder 2 pcs Pacific Microsonics PMD100 Please contact me on audiofreak@jubii.dk and let me know which devices you are looking for. BR Peter

14th July 2008, 09:20 PM	#5
KAISER_nsk diyAudio Member Join Date: Jul 2008	I am also looking to purchase UltraAnalog D20400A

15th July 2008, 12:08 AM	#6
vasiltech diyAudio Member Join Date: Dec 2005 Location: Minsk	Ultra Analog D20400 datasheet : http://www.vasiltech.nm.ru/files/D20400.pdf

23rd December 2008, 11:31 AM	#7
Dmitry Korneev diyAudio Member Join Date: Feb 2007 Location: Moskow	I am also looking to purchase UltraAnalog D20400A

23rd December 2008, 03:02 PM	#8
JC951t diyAudio Member Join Date: Sep 2006	Hmmm, Nice that others are sharing the same santiments as me. I have a spare SFD2 dac board with a dead input receiver. Strangely so, I've seen quite a few dead receiver & have been informed that it's not so reliable. My board has a NPC instead of the PDM100 decoder. Looking at the specs, it seems that the PDM 100 is pin compatable to the NPC chip. Can anyone confirm if it is a drop in replacement ? If it is a drop in replacement, I will try I2S connection to my CD pro using a Hexinvertor as suggested by Guido Tent. Thanks in advance

14th January 2009, 12:59 PM	#10
wolfiregi diyAudio Member Join Date: Nov 2007	Hello. Buy a used Sonic Frontiers Jitterbug via ebay. They are cheap and use Input Receiver AES21.De-solder the chip an repair your DAC. Good luck. Wolfgang Graf

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