AD1865 the best DAC

[analog_sa]

Same as Jonners i'd be interested in an 1865 board with an I2S converter as my interest in spdif is close to zero.

 

[analog_sa]

Hello,
I've tested 10m45 cascode CCS with the 6c45 but this ccs had a lot of noise (Hiss).
Heve you tested this configuration in the real world ?
Ciao
Guglielmo

There is no reason for increased noise. Otoh the 6S45 is very willing to oscillate so this may manifest itself as hiss. What does the scope show?

 

[regal]

Hello,
I've tested 10m45 cascode CCS with the 6c45 but this ccs had a lot of noise (Hiss).
Heve you tested this configuration in the real world ?
Ciao
Guglielmo

the problem is the 6c45, I built the 10m45 cascode ccs with 6n6p's and it was dead silent. Excellent sound, much better than SRPP.

 

[quanghao]

the problem is the 6c45, I built the 10m45 cascode ccs with 6n6p's and it was dead silent. Excellent sound, much better than SRPP.

Hi! Yes I see, but tube 6h6 or 6h30 use CCs, the sound is not good, I think you use paralle, the sound is better!
Thank

 

[quanghao]

Layout IV

 

[quanghao]

Board

Hi all!
Some board im finis!
Dac-end is easy to make, sounds very natural, honest, I like it!
Thank

 

[quanghao]

Salas shunt is very excellently, making the sound of the DAC is very solid, detailed, I enjoyed it, so I pair it with a pair of DAC-en. Please again thank Salas

 

[quanghao]

Dac-END

 

[quanghao]

New I/V srage for DAC-end No use tranformer

audiodesign wrote:** To get the best performances I have developed a new output stage for this DAC.

It use a pair of 5687 or E182CC to produce a low distortion stage with an output impedance near to 1Kohm so able to drive any amplifier. **

Vout = 2Vrms
Vin = 154mVrms
THD = 0.2%

 

[audiodesign]

the AD1865 cannot be driven with I2S signals

 

[QSerraTico_Tico]

the AD1865 cannot be driven with I2S signals

A simple shift register will take care of that.

 

[EUVL]

Can you post a link or a circuit, for the benefit of all ?

Thx,
Patrick

 

[QSerraTico_Tico]

Can you post a link or a circuit, for the benefit of all ?

Thx,
Patrick

Creating a DIY non oversampling DAC with PCM1704

 

[Ginum]

New I/V stage For DAC end,
You can see

What is the point of using a parallel resistors R6-R7 and R8-R9 ?

Thanks

 

[quanghao]

What is the point of using a parallel resistors R6-R7 and R8-R9 ?

Thanks

Ok! you can see here:
http://www.diyaudio.com/forums/group-buys/155960-dac-end-andrea-ciuffoli-group-buys-14.html

 

[quanghao]

What is the point of using a parallel resistors R6-R7 and R8-R9 ?

Thanks

You can se in this link:
http://www.diyaudio.com/forums/group-buys/155960-dac-end-andrea-ciuffoli-group-buys-15.html

post 148

 

[Ginum]

You can se in this link:
http://www.diyaudio.com/forums/group-buys/155960-dac-end-andrea-ciuffoli-group-buys-15.html

post 148

Hi Quang Hao,
Post 148 is about board color
http://www.diyaudio.com/forums/grou...andrea-ciuffoli-group-buys-3.html#post2035696

The color and board when finis is that!

Could you please insert direct link or explain there.
Thanks.

 

[quanghao]

IV stage for DAC-end

Hi Ginum!
ok! thank you very much!

 

[quanghao]

I/V stage cricuit for DAC-END

The cricuit I/V stage. In this cricuit you can use the sample one Pre, Zoou under 1K.

Andrea Ciuffoli say that :
*** Here the final output stage

THD measurement with and without 10Kohm load.

Output impedance less than 1Kohm

Power supply voltage about 270V

Ik = 2 x 8mA

Freq = 10Hz at -0.7db

Vout = 2Vrms with an input of 154mVrms

THD = 0.3% thd max on 10Kohm load ***

And
**To prevent dc voltage on output durung switch-on and switch off phase a relay will short the output to the ground for some seconds.

The delay circuit is the same used in the my design of Monrio Top-Loader CD Player (value 10000$). **

 

[audiodesign]

I have opended a webpage to insert all the information about this project

DAC End - the AD1865N-K with single ended vacuum output stage