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Old 4th February 2019, 08:16 AM   #311
tru168 is offline tru168
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Originally Posted by Malefoda View Post
Nice job!
Thanks!
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Old 6th February 2019, 09:12 AM   #312
kazap is offline kazap
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Originally Posted by tru168 View Post
.....my DIY discrete 24 bit R2R DAC.

Nice work. That sure takes building your own DAC to the next level.
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Old 8th February 2019, 07:25 AM   #313
ForsbackaKalle is offline ForsbackaKalle  Sweden
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Default CS4398DAC

I ordered an CS4398DAC card from China. Replaced to good quality parts in Powersupply stage. Audio grade capacitors and plenty of power. I wanted to replase the output op-amp stage with transformer stage. Replaced with Lundahl 1690 1:1 transformer. Im really happy with the result and fits my tube rigg really well. Really better sound than my Rega DAC.
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Old 11th February 2019, 09:03 PM   #314
savvas is offline savvas  Greece
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Quote:
Originally Posted by ForsbackaKalle View Post
I ordered an CS4398DAC card from China. Replaced to good quality parts in Powersupply stage. Audio grade capacitors and plenty of power. I wanted to replase the output op-amp stage with transformer stage. Replaced with Lundahl 1690 1:1 transformer. Im really happy with the result and fits my tube rigg really well. Really better sound than my Rega DAC.
You really did it your way and it's great that you've been rewarded.
Quality parts not only worth soundwise but will also extend the longevity of your dac, nice move.
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Old 12th February 2019, 12:58 AM   #315
tru168 is offline tru168
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Originally Posted by tru168 View Post
Hi ,

Just wish to share my DIY discrete 24 bit R2R DAC. I'm building another one with 18 or 20 bit because of matching resistors are virtually impossible for 24bit, but it sounds great with resistors I matched using 6-1/2 digit multimeter.

a simple video here,
YouTube


Click the image to open in full size.
Hi all, Received a message and inform that the image are gone, sorry.I can't see edit post function so I re-attach the Image again.

Youtube video : YouTube


Click the image to open in full size.
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Old 15th February 2019, 11:54 AM   #316
daemonsgr is offline daemonsgr  United Kingdom
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Originally Posted by grunf View Post
One 'small' upgrade
Otherwise, the DAC sounds great. One of the best 'analog' digital sources I've heard.
May I ask if you have this project public somewhere?! Im thinking about a 'tube dac' project lately.

(pointers to other cool tubedacs would be much appreciated too of course)

Thanks
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Old 15th February 2019, 08:49 PM   #317
MarcelvdG is offline MarcelvdG  Netherlands
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Location: Haarlem, the Netherlands
Quote:
Originally Posted by daemonsgr View Post
Im thinking about a 'tube dac' project lately.

(pointers to other cool tubedacs would be much appreciated too of course)

Thanks

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Linear Audio | your tech audio resource

https://linearaudio.net/sites/linear...%20posting.zip

https://linearaudio.net/sites/linear...version2p1.zip
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Old 16th February 2019, 02:19 PM   #318
daemonsgr is offline daemonsgr  United Kingdom
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Thanks a lot!
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Old 17th February 2019, 12:43 AM   #319
grunf is offline grunf  Croatia
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Quote:
Originally Posted by daemonsgr View Post
May I ask if you have this project public somewhere?! Im thinking about a 'tube dac' project lately.

(pointers to other cool tubedacs would be much appreciated too of course)

Thanks
I've been publishing in Croatian audio forums for a long time.
This version is far more advanced than the ones from that time, but I did not publish any scheme or project. This would be a new output stage. It was designed for current DAC.
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Old 17th February 2019, 10:21 AM   #320
daemonsgr is offline daemonsgr  United Kingdom
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Quote:
Originally Posted by grunf View Post
I've been publishing in Croatian audio forums for a long time.
This version is far more advanced than the ones from that time, but I did not publish any scheme or project. This would be a new output stage. It was designed for current DAC.
I probably need to start a new thread as Im not as advanced as you guys! My idea was to mod a "pi DAC thingy" with some tube final stage/buffer.
Thanks
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