AD1865 the best DAC

audiodesign · 3rd November 2007, 06:33 PM

After some test with No oversampling DAC chip I think that the AD1865 is the best.

If compared to the new technology DAC chips like AD1955 and CS4397 since to be more natural.

The old TDA have a too close sound and with these some particulars are lost.

The preview of my article is here
http://www.audiodesignguide.com/DacNoOverSampling/

But where I can get some AD1865 chips to create a kit ?

Someone have tested the AD1861 or the AD1851 with th esame technology ?

Bernhard · 3rd November 2007, 07:14 PM

Did you try PCM56 ? Same as AD1856 = 16 bit version of AD1861.
Best IMHO.

Every kind of TDA sucks, right.

Do you use an analog filter ?

I tried everything from unfiltered over transformer filter to active & passive brickwall and passive brickwall sounds best.

Your THD numbers seem to be a little bit.high.

Why only show spectrum to -80dB ?

QSerraTico_Tico · 3rd November 2007, 08:12 PM

Quote:

Originally posted by Bernhard

...........and passive brickwall sounds best.

...........

Any schematic?
Do you use a digital filter?

Bernhard · 3rd November 2007, 10:48 PM

Quote:

Originally posted by QSerraTico_Tico
digital filter?

audiodesign · 4th November 2007, 05:44 AM

No digital filter

I/V converter made with a Caddock MK132

No analog filter, in the final version a LL7903 wil be used to increase the output voltage and tii create a natural filter

Cauhtemoc · 4th November 2007, 07:02 AM

You should consider the AD1862 as well, it is the bigger brother of the AD1865.

audiodesign · 4th November 2007, 07:11 AM

I cannot find a shop to by the AD1861 or Ad1862

A question:

- also the new product dac like ad1955 could be used without digital filter and no oversampling ?

QSerraTico_Tico · 4th November 2007, 07:37 AM

Quote:

Originally posted by audiodesign
No digital filter

I/V converter made with a Caddock MK132

No analog filter, in the final version a LL7903 wil be used to increase the output voltage and tii create a natural filter

You will have birdies all over the place... and intermodulation poducts. What is a "natural" filter?
My question was addressed at Bernard though.

QSerraTico_Tico · 4th November 2007, 07:44 AM

Quote:

Originally posted by audiodesign
I cannot find a shop to by the AD1861 or Ad1862

A question:

- also the new product dac like ad1955 could be used without digital filter and no oversampling ?

Group buy for AD1862 on this forum!

AD1861 I still have at least 4 for sale.

QSerraTico_Tico · 4th November 2007, 07:46 AM

Quote:

Originally posted by Bernhard

Do I take that "eek" for a no?

3rd November 2007, 06:33 PM	#1
audiodesign diyAudio Member Join Date: Sep 2005	AD1865 the best DAC After some test with No oversampling DAC chip I think that the AD1865 is the best. If compared to the new technology DAC chips like AD1955 and CS4397 since to be more natural. The old TDA have a too close sound and with these some particulars are lost. The preview of my article is here http://www.audiodesignguide.com/DacNoOverSampling/ But where I can get some AD1865 chips to create a kit ? Someone have tested the AD1861 or the AD1851 with th esame technology ?

3rd November 2007, 07:14 PM	#2
Bernhard diyAudio Member Join Date: Apr 2002 Location: Munich	Re: AD1865 the best DAC Did you try PCM56 ? Same as AD1856 = 16 bit version of AD1861. Best IMHO. Every kind of TDA sucks, right. Do you use an analog filter ? I tried everything from unfiltered over transformer filter to active & passive brickwall and passive brickwall sounds best. Your THD numbers seem to be a little bit.high. Why only show spectrum to -80dB ?

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4th November 2007, 05:44 AM	#5
audiodesign diyAudio Member Join Date: Sep 2005	No digital filter I/V converter made with a Caddock MK132 No analog filter, in the final version a LL7903 wil be used to increase the output voltage and tii create a natural filter

4th November 2007, 07:02 AM	#6
Cauhtemoc diyAudio Member Join Date: Jun 2007	You should consider the AD1862 as well, it is the bigger brother of the AD1865.

4th November 2007, 07:11 AM	#7
audiodesign diyAudio Member Join Date: Sep 2005	I cannot find a shop to by the AD1861 or Ad1862 A question: - also the new product dac like ad1955 could be used without digital filter and no oversampling ?