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audiodesign 3rd November 2007 06:33 PM

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 ?

Bernhard 3rd November 2007 07:14 PM

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 ?

QSerraTico_Tico 3rd November 2007 08:12 PM

Re: Re: AD1865 the best DAC
 
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

Re: Re: Re: AD1865 the best DAC
 
Quote:

Originally posted by QSerraTico_Tico
digital filter?
:eek:

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

Re: Re: Re: Re: AD1865 the best DAC
 
Quote:

Originally posted by Bernhard

:eek:


Do I take that "eek" for a no?


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