Pedja Rogic was so kind and permit me to make a pcb with his circuit.
To get a smaller pcb, i made two connectors for the needed big 10µF caps.
The PCB will have the following data:
Material: FR4 - 2mm
Layers: 2
Board size: 110x95 mm
Surface finish: Immersion Gold
Copper weight: 70µm
Soldermask: Both sides - green
Silkscreen: Legend on top
The price will be:
Pedja Rogic DDNF I/V Stage Module: $ 16
Worldwide shipping: $ 9
Europe shipping: $ 5
paypal fee: 3,9%
A donation of $3 USD to diyAudio will be done for every pcb sold.
After testing the GB will start shortly.
Please post your pre-order wishes to my Blog.
I will delete the comments after dispatching the pcb´s.
To get a smaller pcb, i made two connectors for the needed big 10µF caps.
An externally hosted image should be here but it was not working when we last tested it.
The PCB will have the following data:
Material: FR4 - 2mm
Layers: 2
Board size: 110x95 mm
Surface finish: Immersion Gold
Copper weight: 70µm
Soldermask: Both sides - green
Silkscreen: Legend on top
The price will be:
Pedja Rogic DDNF I/V Stage Module: $ 16
Worldwide shipping: $ 9
Europe shipping: $ 5
paypal fee: 3,9%
A donation of $3 USD to diyAudio will be done for every pcb sold.
After testing the GB will start shortly.
Please post your pre-order wishes to my Blog.
I will delete the comments after dispatching the pcb´s.
The 1st test sample arrived.
Testing begins when i´ve got all parts.
An externally hosted image should be here but it was not working when we last tested it.
Testing begins when i´ve got all parts.
Also the DDNF I/V Stage PSU Module is in production.
Further informations in my Blog.
An externally hosted image should be here but it was not working when we last tested it.
Further informations in my Blog.
Testing finished
The testing is finished and the GB could start.
Here you could see the complete DDNF I/V Output Stage.
Transformer input voltage: 3* 24VAC
Shunt input voltages: 3* 32VDC
Shunt pot value: 3* 5k0
Heatsink Rth: 3,7 K/W or better
Here you could see the complete DDNF I/V Output Stage.
An externally hosted image should be here but it was not working when we last tested it.
Transformer input voltage: 3* 24VAC
Shunt input voltages: 3* 32VDC
Shunt pot value: 3* 5k0
Heatsink Rth: 3,7 K/W or better
1st listening impressions
The whole DDNF I/V stage runs now around 40 hrs.
Time to make a listening session.
1st i am very impressed.
In comparison with my Tube-I-zator it has a bit wider soundstage and a more forward presentation.
The smoothness of the tube is gone. It is extreme fast and punchy.
As the Tube-I-zator with a beautiful natural sound, but not with it´s extreme 3D stage.
All this with a PRP9372 R I/V and with Mundorf Supreme 10µF caps.
What would happened when a Texas Component TX2575 goes in the I/V position
and the caps would be changed to Mundorf Supreme silver/oil or silver/gold/oil...
It´s up to your taste!
Time to make a listening session.
1st i am very impressed.
In comparison with my Tube-I-zator it has a bit wider soundstage and a more forward presentation.
The smoothness of the tube is gone. It is extreme fast and punchy.
As the Tube-I-zator with a beautiful natural sound, but not with it´s extreme 3D stage.
All this with a PRP9372 R I/V and with Mundorf Supreme 10µF caps.
What would happened when a Texas Component TX2575 goes in the I/V position
and the caps would be changed to Mundorf Supreme silver/oil or silver/gold/oil...
It´s up to your taste!
The whole DDNF I/V stage runs now around 40 hrs.
Time to make a listening session.
1st i am very impressed.
In comparison with my Tube-I-zator it has a bit wider soundstage and a more forward presentation.
The smoothness of the tube is gone. It is extreme fast and punchy.
As the Tube-I-zator with a beautiful natural sound, but not with it´s extreme 3D stage.
All this with a PRP9372 R I/V and with Mundorf Supreme 10µF caps.
What would happened when a Texas Component TX2575 goes in the I/V position
and the caps would be changed to Mundorf Supreme silver/oil or silver/gold/oil...
It´s up to your taste!
Hmmm interesting..very interesting...Oliver have you tried the EcDesigns Mk7 output yet?
No. This will be on the DAC V3.0 module witch is scheduled to August/September.
Hi mr-mouse,
because of a low interest in the past, i will not start a new batch.
For all who want to produce this pcb, i have attached the Gerber files.
If you want to have my populated pcb, please send me a PM.
Best regards,
Oliver
Bargain Sale
Here you could order my ready build DDNF test module
Main Parts
- PRP Resistors
- Elna RFS Silmic II caps
- Mundorf MCap supreme 10µF output caps
for the special price of
$99
including
Worldwide shipping and paypal fee
If you are interested, please send me a PM.
Bargain Sale
Here you could order my ready build DDNF test module
Main Parts
- PRP Resistors
- Elna RFS Silmic II caps
- Mundorf MCap supreme 10µF output caps
for the special price of
$99
including
Worldwide shipping and paypal fee
An externally hosted image should be here but it was not working when we last tested it.
If you are interested, please send me a PM.
Bargain Sale
Here you could order my ready build DDNF test module
Main Parts
- PRP Resistors
- Elna RFS Silmic II caps
- Mundorf MCap supreme 10µF output caps
for the special price of
$99
including
Worldwide shipping and paypal fee
An externally hosted image should be here but it was not working when we last tested it.
If you are interested, please send me a PM.
Sold!
Hi,
unfortunately i can´t answer this question. Please ask Pedja, because it is his circuit.
Best
Oliver
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