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Old 22nd February 2014, 04:12 PM   #111
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haha nice name
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Old 22nd February 2014, 04:18 PM   #112
ishiru is offline ishiru  Indonesia
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Quote:
Originally Posted by ROCKMANDRAKE View Post
Hi,

DDDAC under construction.

I am waiting for 1794S mainboard in order to finalize this design...


---



Regards


Rock
looks great!
why you covered the supply caps btw?
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HDD - Tube DAC - XV-2 xover - Krell Clone 50 + 4W class A mosfet amp - Technics SB-2470 (modded)
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Old 22nd February 2014, 05:04 PM   #113
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why you covered the supply caps btw? [/QUOTE]




Hi,

vain attempt ( ? ) to do a kind of electrostatic screen in order to reduce

interference but gorgeous ( ! ) visual effect ( to my eyes )...

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Old 23rd February 2014, 04:07 AM   #114
ttan98 is online now ttan98  Australia
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Default DAC with Tube Buffer Preamp

My version of DAC with Tube Buffer output which acts as a Pre-amp. The Dac uses AK4399 Dac chipset and XMOS built-in into the PCB. Viewing the images:

1. Top Left corner is the AK4399 and XMOS PCB
2. Top Right corner is Tube Buffer and pre-amp PCB
3. Bottom left and middle are transformers for DAC and Tube
4. Black casing is the Slot-in CDrom(DVD)

Cheers.
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Old 23rd February 2014, 10:57 AM   #115
McGyver is online now McGyver  Poland
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Somewhat messy prototype of tube output DAC based on TDA1541A-S1 teared out from a dead CD player:

Click the image to open in full size.
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Old 3rd March 2014, 06:30 AM   #116
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Default Great Dude

Hi,




Click the image to open in full size.



This Dac is a little gem !

Thank you very much, Doede...
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Old 4th April 2014, 03:59 PM   #117
ScarF is offline ScarF  Canada
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Default Great Dude questions

Rock,

What input do you use for this DDDAC? On their site they sell the complete kit with a XMOS USB card, which I see it's missing in your DAC.
I am also interested in the power supply you use. Again, it doesn't look like one from DDDAC. Can you please give a reference for it?

Thank you.
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Old 5th April 2014, 10:47 AM   #118
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Default Great Dude

ScarF,

this Dac is fitted with 1794S mainBoard...

Only one Spdif input ( the more musically satisfying to my ear ).

Psu board is from DDDAC but i have broken off all the surface dedicated to original power transformer ( encapsulated )in order to swap this one for a 250VA toroid.

My very last version is, now, fitted with a separated power supply ( 300VA / 300000 microFarads / 170 mH power choke ) dedicated to power only Dac modules ...
Custom output transformers replaced Pio capacitors.

Pfm Audio

Regards
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Old 5th April 2014, 11:23 AM   #119
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Join Date: Oct 2005
Default Great Dude

ScarF,

this Dac is fitted with 1794S mainBoard...

Only one Spdif input ( the more musically satisfying to my ear ).

Psu board is from DDDAC but i have broken off all the surface dedicated to original power transformer ( encapsulated )in order to swap this one for a 250VA toroid.

My very last version is, now, fitted with a separated power supply ( 300VA / 300000 microFarads / 170 mH power choke ) dedicated to power only Dac modules ...
Custom output transformers replaced Pio capacitors.

Pfm Audio

Regards
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Old 7th April 2014, 04:26 AM   #120
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Location: Bandung
My Dir9001 and TDA1543 with Salas Shunt

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Didiet

Last edited by didiet78; 7th April 2014 at 04:29 AM.
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