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Filterless DAC - pros and cons?
Filterless DAC - pros and cons?
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Old 11th August 2004, 02:40 PM   #1
mr_push_pull is offline mr_push_pull  Europe
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Default Filterless DAC - pros and cons?

After reading a few articles about the necessity/non-necessity of the post-DAC reconstruction filter, I see that there are two tendencies:
- remove the filter and rely on the quality of the amplifier, and
- use a tube filter

I'm posting this thread after a long debate about this issue. Since I don't have the expensive equipment to test "empirically" the two variants, I want to ask some more experienced people about this subject. Do you think that the filter can be totally removed if the amplifier has low enough IMD?
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Old 11th August 2004, 03:56 PM   #2
carlosfm is offline carlosfm  Portugal
Join Date: Mar 2003
Location: Lisbon, Portugal
I suppose you are talking about the analog filter after I/V conversion?
You should have something, at least 1st or 2nd order.
I changed completely the analog filter of my Audio Alchemy DDE v3.0 dac (6th order! ) by a second order filter and the result was what I expected: amazing.
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